1. Main function of red blood cells is –
(A) Immunity
(B) Transport of oxygen
(C) Hormone secretion
(D) Digestion
Answer: (B)
2. Stomata are found mainly in –
(A) Stem
(B) Leaf
(C) Root
(D) Flower
Answer: (B)
3. Functional unit of kidney –
(A) Neuron
(B) Nephron
(C) Alveolus
(D) Hepatocyte
Answer: (B)
4. Mitochondria are called –
(A) Nucleus of cell
(B) Power house of cell
(C) Plastid of cell
(D) Cytoplasm of cell
Answer: (B)
5. Which one is a dicot plant?
(A) Rice
(B) Wheat
(C) Mango
(D) Maize
Answer: (C)
6. Main function of liver –
(A) Transport of oxygen
(B) Secretion of insulin
(C) Storage of glycogen
(D) Nerve conduction
Answer: (C)
7. Nucleated RBCs are found in –
(A) Frog
(B) Human
(C) Cat
(D) Dog
Answer: (A)
8. Xylem conducts –
(A) Food
(B) Water and minerals
(C) Photosynthesis
(D) Hormones
Answer: (B)
9. Thyroxine is secreted from –
(A) Adrenal gland
(B) Thyroid gland
(C) Pituitary gland
(D) Pineal gland
Answer: (B)
10. Flat green portion of leaf is –
(A) Stoma
(B) Petiole
(C) Lamina
(D) Midrib
Answer: (C)
11. Organ of hearing –
(A) Eye
(B) Nose
(C) Ear
(D) Skin
Answer: (C)
12. Chlorophyll absorbs mainly –
(A) Green
(B) Red and Blue
(C) Black
(D) White
Answer: (B)
13. Vertebral column is –
(A) Long bone
(B) Short bone
(C) Irregular bone
(D) Flat bone
Answer: (C)
14. Evaporation of water from leaf surface is –
(A) Guttation
(B) Transpiration
(C) Photosynthesis
(D) Respiration
Answer: (B)
15. Protein digestion starts in stomach by –
(A) Pepsin
(B) Amylase
(C) Lipase
(D) Trypsin
Answer: (A)
16. Tip of root is protected by –
(A) Root cap
(B) Root hair
(C) Epidermis
(D) Cuticle
Answer: (A)
17. First product of glucose breakdown –
(A) Pyruvate
(B) Acetyl CoA
(C) Lactic acid
(D) Alcohol
Answer: (A)
18. Which vitamin is fat soluble?
(A) Vitamin B
(B) Vitamin C
(C) Vitamin K
(D) None
Answer: (C)
19. Transpiration mainly occurs through –
(A) Cuticle
(B) Lenticels
(C) Stomata
(D) Root hairs
Answer: (C)
20. Normal body temperature of human is –
(A) 36°C
(B) 37°C
(C) 38°C
(D) 39°C
Answer: (B)
21. Photosynthesis occurs in –
(A) Mitochondria
(B) Chloroplast
(C) Cytoplasm
(D) Nucleus
Answer: (B)
22. Bile is produced by –
(A) Liver
(B) Gall bladder
(C) Pancreas
(D) Stomach
Answer: (A)
23. Which is a non-flowering plant?
(A) Mango
(B) Fern
(C) Mustard
(D) Pea
Answer: (B)
24. Oxygen is transported in blood by –
(A) Plasma
(B) Hemoglobin
(C) WBC
(D) Platelets
Answer: (B)
25. Respiration in plants occurs –
(A) Only in day
(B) Only in night
(C) Day and night
(D) None
Answer: (C)
26. Structural and functional unit of nervous system –
(A) Nephron
(B) Neuron
(C) Axon
(D) Synapse
Answer: (B)
27. The chief photosynthetic pigment –
(A) Chlorophyll
(B) Xanthophyll
(C) Carotene
(D) Anthocyanin
Answer: (A)
28. The smallest bone in human body is –
(A) Femur
(B) Tibia
(C) Stapes
(D) Radius
Answer: (C)
29. Photosynthesis produces –
(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) Sulphur
Answer: (B)
30. Which organ stores bile?
(A) Liver
(B) Pancreas
(C) Gall bladder
(D) Small intestine
Answer: (C)
31. WBCs are mainly responsible for –
(A) Respiration
(B) Immunity
(C) Blood clotting
(D) Digestion
Answer: (B)
32. Movement of water through semi-permeable membrane is –
(A) Active transport
(B) Diffusion
(C) Osmosis
(D) Transpiration
Answer: (C)
33. Which gland is called “master gland”?
(A) Thyroid
(B) Pituitary
(C) Adrenal
(D) Pancreas
Answer: (B)
34. Which plant organelle stores starch?
(A) Chloroplast
(B) Amyloplast
(C) Chromoplast
(D) Mitochondria
Answer: (B)
35. Human heart has –
(A) 2 chambers
(B) 3 chambers
(C) 4 chambers
(D) 5 chambers
Answer: (C)
36. Transpiration pull is responsible for –
(A) Transport of food
(B) Transport of water
(C) Photosynthesis
(D) Respiration
Answer: (B)
37. Which organ secretes insulin?
(A) Liver
(B) Pancreas
(C) Stomach
(D) Kidney
Answer: (B)
38. Photosynthetic unit is –
(A) Granum
(B) Thylakoid
(C) Chlorophyll
(D) Quantasome
Answer: (D)
39. Lens of human eye is –
(A) Transparent and convex
(B) Opaque and concave
(C) Transparent and concave
(D) Opaque and convex
Answer: (A)
40. Leguminous plants fix nitrogen through –
(A) Rhizobium
(B) Clostridium
(C) Azotobacter
(D) Nitrosomonas
Answer: (A)
41. The pacemaker of heart is –
(A) SA node
(B) AV node
(C) Purkinje fibre
(D) Bundle of His
Answer: (A)
42. Photosynthesis is maximum in –
(A) Green light
(B) Red light
(C) Blue light
(D) Red and Blue light
Answer: (D)
43. The largest organ of human body –
(A) Brain
(B) Liver
(C) Heart
(D) Skin
Answer: (D)
44. Cell wall of plants is made of –
(A) Starch
(B) Cellulose
(C) Protein
(D) Lipid
Answer: (B)
45. Which blood group is universal donor?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)
46. Which is not a gymnosperm?
(A) Cycas
(B) Pinus
(C) Mango
(D) Ginkgo
Answer: (C)
47. Which vitamin helps in blood clotting?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin K
Answer: (D)
48. Plant hormone responsible for cell elongation is –
(A) Auxin
(B) Cytokinin
(C) Ethylene
(D) Abscisic acid
Answer: (A)
49. Normal human blood pressure is –
(A) 80/120 mmHg
(B) 90/140 mmHg
(C) 70/110 mmHg
(D) 100/160 mmHg
Answer: (A)
50. Which organelle is responsible for photosynthesis?
(A) Mitochondria
(B) Chloroplast
(C) Golgi body
(D) Ribosome
Answer: (B)
51. Which blood group is universal recipient?
(A) A
(B) B
(C) AB
(D) O
Answer: (C)
52. Functional unit of brain is –
(A) Neuron
(B) Nephron
(C) Axon
(D) Dendrite
Answer: (A)
53. Green algae belong to –
(A) Chlorophyceae
(B) Phaeophyceae
(C) Rhodophyceae
(D) Cyanophyceae
Answer: (A)
54. Human ear ossicles are –
(A) Malleus, Incus, Stapes
(B) Radius, Ulna, Tibia
(C) Humerus, Femur, Fibula
(D) Tarsal, Carpal, Scapula
Answer: (A)
55. Which is the longest cell in human body?
(A) Muscle cell
(B) Neuron
(C) RBC
(D) WBC
Answer: (B)
56. Photosynthetic dark reaction occurs in –
(A) Thylakoid
(B) Stroma
(C) Grana
(D) Ribosome
Answer: (B)
57. Which vitamin deficiency causes night blindness?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (A)
58. Structural protein of hair and nails is –
(A) Collagen
(B) Keratin
(C) Elastin
(D) Myosin
Answer: (B)
59. Which plant tissue is responsible for transport of food?
(A) Xylem
(B) Phloem
(C) Parenchyma
(D) Collenchyma
Answer: (B)
60. Pancreas secretes –
(A) Insulin
(B) Bile
(C) Adrenaline
(D) Thyroxine
Answer: (A)
61. Lens shape is controlled by –
(A) Retina
(B) Iris
(C) Ciliary muscles
(D) Cornea
Answer: (C)
62. C4 plants show –
(A) Kranz anatomy
(B) Parallel venation
(C) Adventitious roots
(D) Secondary growth
Answer: (A)
63. Haemoglobin contains –
(A) Iron
(B) Calcium
(C) Sodium
(D) Potassium
Answer: (A)
64. Which is called the brain of cell?
(A) Cytoplasm
(B) Nucleus
(C) Mitochondria
(D) Ribosome
Answer: (B)
65. Study of insects is –
(A) Ichthyology
(B) Entomology
(C) Herpetology
(D) Ornithology
Answer: (B)
66. Which plant hormone induces ripening of fruits?
(A) Auxin
(B) Cytokinin
(C) Ethylene
(D) Gibberellin
Answer: (C)
67. Sinoatrial node is located in –
(A) Left atrium
(B) Right atrium
(C) Left ventricle
(D) Right ventricle
Answer: (B)
68. Blue-green algae are –
(A) Eukaryotes
(B) Prokaryotes
(C) Protozoa
(D) Fungi
Answer: (B)
69. Which vitamin prevents rickets?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (D)
70. Largest gland of human body is –
(A) Pancreas
(B) Liver
(C) Kidney
(D) Thyroid
Answer: (B)
71. Pteridophytes reproduce by –
(A) Seeds
(B) Spores
(C) Vegetative buds
(D) Cones
Answer: (B)
72. Smallest unit of heredity –
(A) Chromosome
(B) DNA
(C) Gene
(D) Nucleotide
Answer: (C)
73. Systolic pressure in normal adult is –
(A) 80 mmHg
(B) 90 mmHg
(C) 120 mmHg
(D) 140 mmHg
Answer: (C)
74. Plant bending towards light is due to –
(A) Gibberellin
(B) Auxin
(C) Cytokinin
(D) Ethylene
Answer: (B)
75. Which is not an excretory organ?
(A) Kidney
(B) Lungs
(C) Liver
(D) Heart
Answer: (D)
76. Contractile unit of muscle –
(A) Myofibril
(B) Sarcomere
(C) Filament
(D) Z-line
Answer: (B)
77. DNA replication is –
(A) Conservative
(B) Dispersive
(C) Semi-conservative
(D) None
Answer: (C)
78. Which pigment gives red colour to blood?
(A) Chlorophyll
(B) Haemoglobin
(C) Myoglobin
(D) Bilirubin
Answer: (B)
79. The powerhouse of cell –
(A) Ribosome
(B) Nucleus
(C) Mitochondria
(D) Golgi body
Answer: (C)
80. Rhizobium bacteria live in –
(A) Root nodules
(B) Leaf
(C) Stem
(D) Flowers
Answer: (A)
81. Enzyme in saliva is –
(A) Pepsin
(B) Ptyalin
(C) Trypsin
(D) Lipase
Answer: (B)
82. Which gas is released during photosynthesis?
(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) Hydrogen
Answer: (B)
83. Pituitary gland is located in –
(A) Neck
(B) Brain
(C) Abdomen
(D) Chest
Answer: (B)
84. Plants which bear naked seeds are –
(A) Angiosperms
(B) Gymnosperms
(C) Pteridophytes
(D) Bryophytes
Answer: (B)
85. Largest part of human brain –
(A) Cerebrum
(B) Cerebellum
(C) Medulla
(D) Thalamus
Answer: (A)
86. Which element is essential for chlorophyll synthesis?
(A) Iron
(B) Magnesium
(C) Calcium
(D) Sodium
Answer: (B)
87. Blood clotting factor is –
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin K
Answer: (D)
88. The process of losing water droplets from leaf tips –
(A) Transpiration
(B) Guttation
(C) Respiration
(D) Excretion
Answer: (B)
89. Which part of brain controls heartbeat?
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Pons
Answer: (C)
90. The outermost layer of root is –
(A) Cortex
(B) Epidermis
(C) Endodermis
(D) Pericycle
Answer: (B)
91. Human blood has –
(A) Plasma and WBC only
(B) Plasma and RBC only
(C) Plasma and platelets only
(D) Plasma, RBC, WBC, platelets
Answer: (D)
92. Which gas is essential for photosynthesis?
(A) Oxygen
(B) Nitrogen
(C) Carbon dioxide
(D) Sulphur dioxide
Answer: (C)
93. Normal heartbeat per minute –
(A) 60–70
(B) 70–80
(C) 72
(D) 90
Answer: (C)
94. Food conducting tissue of plants –
(A) Xylem
(B) Phloem
(C) Cambium
(D) Parenchyma
Answer: (B)
95. The voice box in humans is –
(A) Pharynx
(B) Larynx
(C) Trachea
(D) Bronchi
Answer: (B)
96. Which vitamin is synthesized in skin?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin E
Answer: (C)
97. Which plant tissue provides mechanical support?
(A) Parenchyma
(B) Collenchyma
(C) Phloem
(D) Xylem
Answer: (B)
98. Which blood cells help in blood clotting?
(A) RBC
(B) WBC
(C) Platelets
(D) Plasma
Answer: (C)
99. Organ of balance in human body –
(A) Ear
(B) Nose
(C) Skin
(D) Brain
Answer: (A)
100. Plants without vascular tissue are –
(A) Bryophytes
(B) Pteridophytes
(C) Gymnosperms
(D) Angiosperms
Answer: (A)
101. Site of fertilization in human female –
(A) Ovary
(B) Uterus
(C) Fallopian tube
(D) Cervix
Answer: (C)
102. Largest bone in human body –
(A) Tibia
(B) Fibula
(C) Femur
(D) Humerus
Answer: (C)
103. Photosynthetic unit of chloroplast is –
(A) Granum
(B) Stroma
(C) Thylakoid
(D) Quantasome
Answer: (D)
104. Which blood cell has no nucleus?
(A) RBC
(B) WBC
(C) Platelets
(D) Lymphocyte
Answer: (A)
105. The process of cell division in somatic cells –
(A) Mitosis
(B) Meiosis
(C) Amitosis
(D) Endomitosis
Answer: (A)
106. Which vitamin is called ascorbic acid?
(A) Vitamin A
(B) Vitamin B12
(C) Vitamin C
(D) Vitamin D
Answer: (C)
107. Pneumatophores are found in –
(A) Mango
(B) Mustard
(C) Rhizophora
(D) Sunflower
Answer: (C)
108. Which part of nephron filters blood?
(A) Henle’s loop
(B) Glomerulus
(C) Collecting duct
(D) Bowman’s capsule
Answer: (B)
109. Heartbeat is initiated by –
(A) AV node
(B) SA node
(C) Purkinje fibers
(D) Bundle of His
Answer: (B)
110. Red tide in sea is caused by –
(A) Cyanobacteria
(B) Dinoflagellates
(C) Diatoms
(D) Euglenoids
Answer: (B)
111. Plant bending towards gravity is –
(A) Phototropism
(B) Geotropism
(C) Hydrotropism
(D) Thigmotropism
Answer: (B)
112. Which organ secretes bile juice?
(A) Pancreas
(B) Liver
(C) Gall bladder
(D) Stomach
Answer: (B)
113. Genetic material in retrovirus is –
(A) DNA
(B) RNA
(C) Protein
(D) Polysaccharide
Answer: (B)
114. Human skin colour is due to –
(A) Collagen
(B) Keratin
(C) Melanin
(D) Hemoglobin
Answer: (C)
115. Casparian strip is present in –
(A) Epidermis
(B) Endodermis
(C) Cortex
(D) Phloem
Answer: (B)
116. Which gland is called master gland?
(A) Thyroid
(B) Pancreas
(C) Pituitary
(D) Adrenal
Answer: (C)
117. Opening and closing of stomata is controlled by –
(A) Guard cells
(B) Epidermis
(C) Mesophyll
(D) Phloem
Answer: (A)
118. Respiratory pigment of RBC is –
(A) Myoglobin
(B) Hemoglobin
(C) Chlorophyll
(D) Bilirubin
Answer: (B)
119. Which plant is used as biofertilizer?
(A) Azolla
(B) Mango
(C) Maize
(D) Wheat
Answer: (A)
120. Male reproductive organ in human is –
(A) Ovary
(B) Testis
(C) Uterus
(D) Prostate
Answer: (B)
121. Functional unit of kidney –
(A) Nephron
(B) Glomerulus
(C) Tubule
(D) Bowman’s capsule
Answer: (A)
122. CAM plants open stomata –
(A) During day
(B) During night
(C) Always open
(D) Always closed
Answer: (B)
123. Which ion is essential for muscle contraction?
(A) Na⁺
(B) K⁺
(C) Ca²⁺
(D) Cl⁻
Answer: (C)
124. Cytoplasmic inheritance is due to –
(A) Mitochondria and chloroplast DNA
(B) Nuclear DNA only
(C) Chromosomes
(D) Ribosomes
Answer: (A)
125. Which enzyme digests protein in stomach?
(A) Amylase
(B) Pepsin
(C) Lipase
(D) Trypsin
Answer: (B)
126. Photosynthesis is maximum in –
(A) Green light
(B) Red and blue light
(C) Yellow light
(D) Infrared light
Answer: (B)
127. Which hormone controls blood sugar level?
(A) Insulin
(B) Thyroxine
(C) Adrenaline
(D) Cortisol
Answer: (A)
128. Endosperm in angiosperms is formed by –
(A) Single fertilization
(B) Double fertilization
(C) Triple fusion
(D) Cross fertilization
Answer: (C)
129. Normal pH of human blood is –
(A) 6.8
(B) 7.4
(C) 7.0
(D) 8.0
Answer: (B)
130. Energy currency of cell –
(A) ATP
(B) ADP
(C) GTP
(D) NADH
Answer: (A)
131. Flagella in bacteria is made of –
(A) Tubulin
(B) Actin
(C) Flagellin
(D) Myosin
Answer: (C)
132. Root hairs develop from –
(A) Epidermis
(B) Endodermis
(C) Cortex
(D) Pericycle
Answer: (A)
133. Largest organ of human body –
(A) Heart
(B) Skin
(C) Liver
(D) Lungs
Answer: (B)
134. Chloroplast is absent in –
(A) Mesophyll
(B) Guard cells
(C) Root cells
(D) Algae
Answer: (C)
135. Which hormone is called fight-or-flight hormone?
(A) Insulin
(B) Adrenaline
(C) Thyroxine
(D) Cortisol
Answer: (B)
136. Example of a dicot plant –
(A) Wheat
(B) Maize
(C) Mustard
(D) Rice
Answer: (C)
137. Transport of oxygen in blood is –
(A) Dissolved in plasma
(B) Bound to hemoglobin
(C) By WBC
(D) By platelets
Answer: (B)
138. Cork cells are formed from –
(A) Xylem
(B) Phloem
(C) Cork cambium
(D) Pith
Answer: (C)
139. Which muscle is involuntary?
(A) Skeletal
(B) Smooth
(C) Biceps
(D) Triceps
Answer: (B)
140. In plants, ascent of sap is by –
(A) Phloem
(B) Cambium
(C) Xylem
(D) Pith
Answer: (C)
141. Number of chromosomes in human gametes –
(A) 23
(B) 46
(C) 22
(D) 44
Answer: (A)
142. Which vitamin is water soluble?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin E
Answer: (B)
143. Climbing roots are found in –
(A) Maize
(B) Mustard
(C) Betel
(D) Sunflower
Answer: (C)
144. Pulmonary vein carries –
(A) Deoxygenated blood
(B) Oxygenated blood
(C) Mixed blood
(D) CO₂ only
Answer: (B)
145. Which pigment absorbs maximum light in photosynthesis?
(A) Chlorophyll a
(B) Chlorophyll b
(C) Carotene
(D) Xanthophyll
Answer: (A)
146. Which blood group is universal donor?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)
147. Largest lymphatic organ –
(A) Spleen
(B) Tonsil
(C) Thymus
(D) Appendix
Answer: (A)
148. Which plant shows phylloclade?
(A) Opuntia
(B) Mustard
(C) Maize
(D) Sunflower
Answer: (A)
149. Myopia is corrected by –
(A) Convex lens
(B) Concave lens
(C) Cylindrical lens
(D) Bifocal lens
Answer: (B)
150. Site of glycolysis in cell –
(A) Mitochondria
(B) Cytoplasm
(C) Nucleus
(D) Ribosome
Answer: (B)
151. Which tissue transports food in plants?
(A) Xylem
(B) Phloem
(C) Cambium
(D) Cork
Answer: (B)
152. Which vitamin prevents rickets?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (D)
153. The protein-digesting enzyme in pancreatic juice is –
(A) Amylase
(B) Lipase
(C) Trypsin
(D) Maltase
Answer: (C)
154. Which plant has pneumatophores?
(A) Rice
(B) Mango
(C) Avicennia
(D) Mustard
Answer: (C)
155. Male gamete in angiosperms is produced in –
(A) Ovule
(B) Pollen grain
(C) Stigma
(D) Style
Answer: (B)
156. Erythrocytes are formed in –
(A) Kidney
(B) Bone marrow
(C) Spleen
(D) Liver
Answer: (B)
157. The largest gland in human body –
(A) Pituitary
(B) Liver
(C) Pancreas
(D) Thyroid
Answer: (B)
158. Which tissue in plants provides mechanical support?
(A) Parenchyma
(B) Collenchyma
(C) Phloem
(D) Xylem vessels
Answer: (B)
159. Which organelle is called power house of the cell?
(A) Ribosome
(B) Mitochondria
(C) Chloroplast
(D) Nucleus
Answer: (B)
160. Stomata are mainly found on –
(A) Upper epidermis of leaf
(B) Lower epidermis of leaf
(C) Root tip
(D) Stem
Answer: (B)
161. Pulmonary artery carries –
(A) Oxygenated blood
(B) Deoxygenated blood
(C) Mixed blood
(D) Plasma only
Answer: (B)
162. The causative agent of malaria is –
(A) Trypanosoma
(B) Plasmodium
(C) Entamoeba
(D) Leishmania
Answer: (B)
163. Leguminous plants fix nitrogen by –
(A) Rhizobium
(B) Azotobacter
(C) Nostoc
(D) Azolla
Answer: (A)
164. Smallest structural unit of muscle is –
(A) Myofibril
(B) Sarcomere
(C) Actin
(D) Myosin
Answer: (B)
165. Climbing roots are found in –
(A) Betel
(B) Maize
(C) Mustard
(D) Sunflower
Answer: (A)
166. Example of a non-nucleated cell –
(A) WBC
(B) RBC
(C) Neuron
(D) Platelets
Answer: (B)
167. Which plant tissue conducts water?
(A) Xylem
(B) Phloem
(C) Collenchyma
(D) Sclerenchyma
Answer: (A)
168. The enzyme that digests fat –
(A) Amylase
(B) Lipase
(C) Pepsin
(D) Trypsin
Answer: (B)
169. C4 pathway was discovered by –
(A) Hatch and Slack
(B) Calvin and Benson
(C) Engelmann
(D) Hill
Answer: (A)
170. Largest artery in human body –
(A) Vein cava
(B) Aorta
(C) Pulmonary vein
(D) Coronary artery
Answer: (B)
171. Which is the contractile protein in muscle?
(A) Albumin
(B) Collagen
(C) Actin & Myosin
(D) Elastin
Answer: (C)
172. Which plant shows phyllode?
(A) Opuntia
(B) Acacia
(C) Maize
(D) Wheat
Answer: (B)
173. Which blood group is universal recipient?
(A) A
(B) B
(C) AB
(D) O
Answer: (C)
174. Double fertilization is found in –
(A) Angiosperms
(B) Gymnosperms
(C) Pteridophytes
(D) Bryophytes
Answer: (A)
175. Which gland secretes growth hormone?
(A) Thyroid
(B) Pituitary
(C) Pancreas
(D) Adrenal
Answer: (B)
176. Which pigment captures maximum light in photosynthesis?
(A) Chlorophyll a
(B) Chlorophyll b
(C) Xanthophyll
(D) Carotene
Answer: (A)
177. Bile juice helps in –
(A) Protein digestion
(B) Fat emulsification
(C) Carbohydrate digestion
(D) DNA synthesis
Answer: (B)
178. Contractile vacuole is present in –
(A) Amoeba
(B) Euglena
(C) Paramecium
(D) Plasmodium
Answer: (C)
179. Which plant hormone promotes cell elongation?
(A) Cytokinin
(B) Gibberellin
(C) Auxin
(D) Ethylene
Answer: (C)
180. Which vitamin is synthesized by skin in presence of sunlight?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin K
Answer: (C)
181. Synapse occurs between –
(A) Two axons
(B) Two dendrites
(C) Axon and dendrite
(D) Axon and muscle only
Answer: (C)
182. Algae belonging to brown group –
(A) Chlorophyceae
(B) Phaeophyceae
(C) Rhodophyceae
(D) Cyanophyceae
Answer: (B)
183. Which blood cell produces antibodies?
(A) Neutrophil
(B) Basophil
(C) Lymphocyte
(D) Eosinophil
Answer: (C)
184. Casparian strip is made of –
(A) Lignin
(B) Suberin
(C) Cutin
(D) Pectin
Answer: (B)
185. Which is the functional unit of nervous system?
(A) Brain
(B) Spinal cord
(C) Neuron
(D) Nerve
Answer: (C)
186. Example of insectivorous plant –
(A) Mango
(B) Nepenthes
(C) Rice
(D) Sunflower
Answer: (B)
187. Site of gas exchange in lungs –
(A) Bronchi
(B) Bronchioles
(C) Alveoli
(D) Pleura
Answer: (C)
188. Chromosomes are made of –
(A) Protein
(B) DNA and protein
(C) RNA only
(D) Carbohydrate
Answer: (B)
189. Cork cambium produces –
(A) Secondary xylem
(B) Secondary phloem
(C) Periderm
(D) Pith
Answer: (C)
190. Which part of brain controls heartbeat?
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Hypothalamus
Answer: (C)
191. Non-green parasitic plant –
(A) Orobanche
(B) Cuscuta
(C) Loranthus
(D) All of these
Answer: (D)
192. Which protein transports oxygen in muscle?
(A) Hemoglobin
(B) Myoglobin
(C) Cytochrome
(D) Hemocyanin
Answer: (B)
193. Which element is central in chlorophyll?
(A) Iron
(B) Magnesium
(C) Calcium
(D) Copper
Answer: (B)
194. Platelets are important for –
(A) Immunity
(B) Oxygen transport
(C) Blood clotting
(D) Phagocytosis
Answer: (C)
195. Example of xerophyte –
(A) Lotus
(B) Opuntia
(C) Rice
(D) Maize
Answer: (B)
196. First heart sound (lub) is due to closure of –
(A) Semilunar valves
(B) AV valves
(C) Tricuspid only
(D) Bicuspid only
Answer: (B)
197. Which is a C3 plant?
(A) Sugarcane
(B) Rice
(C) Maize
(D) Sorghum
Answer: (B)
198. Which organ secretes insulin?
(A) Liver
(B) Pancreas
(C) Kidney
(D) Spleen
Answer: (B)
199. Endosperm is absent in seeds of –
(A) Maize
(B) Castor
(C) Pea
(D) Coconut
Answer: (C)
200. Which joint is immovable?
(A) Shoulder
(B) Knee
(C) Skull
(D) Hip
Answer: (C)
201. Which organelle contains digestive enzymes?
(A) Ribosome
(B) Lysosome
(C) Golgi body
(D) Mitochondria
Answer: (B)
202. Which plant shows photosynthetic roots?
(A) Orchid
(B) Tinospora
(C) Trapa
(D) Podostemon
Answer: (B)
203. Normal blood pH in humans is –
(A) 6.8
(B) 7.4
(C) 7.0
(D) 7.8
Answer: (B)
204. Which plant group has archegonia?
(A) Angiosperms
(B) Gymnosperms
(C) Bryophytes
(D) Both B and C
Answer: (D)
205. Largest vertebrate animal is –
(A) Whale shark
(B) Blue whale
(C) Elephant
(D) Crocodile
Answer: (B)
206. Which enzyme is present in saliva?
(A) Pepsin
(B) Ptyalin
(C) Lipase
(D) Trypsin
Answer: (B)
207. Transpiration is measured by –
(A) Porometer
(B) Potometer
(C) Manometer
(D) Hygrometer
Answer: (B)
208. Which vitamin is called anti-sterility vitamin?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin E
Answer: (D)
209. Which organism has a water vascular system?
(A) Mollusca
(B) Arthropoda
(C) Echinodermata
(D) Annelida
Answer: (C)
210. Opening between left atrium and left ventricle is guarded by –
(A) Tricuspid valve
(B) Bicuspid valve
(C) Semilunar valve
(D) Pulmonary valve
Answer: (B)
211. Which pigment gives red color to red algae?
(A) Fucoxanthin
(B) Phycoerythrin
(C) Phycocyanin
(D) Carotene
Answer: (B)
212. Haemophilia is a –
(A) Viral disease
(B) Genetic disorder
(C) Bacterial disease
(D) Deficiency disease
Answer: (B)
213. Which is a dicot plant?
(A) Maize
(B) Wheat
(C) Pea
(D) Rice
Answer: (C)
214. Functional unit of kidney –
(A) Nephron
(B) Glomerulus
(C) Bowman’s capsule
(D) Loop of Henle
Answer: (A)
215. Pneumatophores help in –
(A) Photosynthesis
(B) Respiration
(C) Absorption
(D) Storage
Answer: (B)
216. Which hormone increases blood sugar?
(A) Insulin
(B) Glucagon
(C) Thyroxine
(D) Adrenaline
Answer: (B)
217. Example of parasitic plant –
(A) Nepenthes
(B) Cuscuta
(C) Utricularia
(D) Drosera
Answer: (B)
218. Myopia is corrected by –
(A) Convex lens
(B) Concave lens
(C) Cylindrical lens
(D) Contact lens
Answer: (B)
219. Gymnosperm seeds are –
(A) Covered
(B) Naked
(C) Double fertilized
(D) Monocotyledonous
Answer: (B)
220. Which blood cell is phagocytic?
(A) Neutrophil
(B) Eosinophil
(C) Basophil
(D) Lymphocyte
Answer: (A)
221. Cork cells are dead and contain –
(A) Lignin
(B) Suberin
(C) Pectin
(D) Cellulose
Answer: (B)
222. In mammals, fertilization occurs in –
(A) Ovary
(B) Fallopian tube
(C) Uterus
(D) Cervix
Answer: (B)
223. In angiosperms, double fertilization produces –
(A) Zygote and embryo sac
(B) Zygote and endosperm
(C) Embryo sac and fruit
(D) Embryo sac and seed
Answer: (B)
224. Lens of eye is held in position by –
(A) Cornea
(B) Suspensory ligament
(C) Ciliary body
(D) Retina
Answer: (B)
225. Example of edible fungi –
(A) Penicillium
(B) Agaricus
(C) Rhizopus
(D) Yeast
Answer: (B)
226. Which hormone controls metamorphosis in frog?
(A) Insulin
(B) Thyroxine
(C) Adrenaline
(D) Estrogen
Answer: (B)
227. Lenticels are found in –
(A) Root
(B) Leaf
(C) Stem
(D) Flower
Answer: (C)
228. Human skin color is due to –
(A) Hemoglobin
(B) Melanin
(C) Bilirubin
(D) Chlorophyll
Answer: (B)
229. Function of sieve tube in plants –
(A) Transport of water
(B) Transport of food
(C) Photosynthesis
(D) Storage
Answer: (B)
230. Pacemaker of the heart is –
(A) AV node
(B) SA node
(C) Purkinje fibres
(D) Bundle of His
Answer: (B)
231. Ovule is attached to ovary wall by –
(A) Funicle
(B) Hilum
(C) Placenta
(D) Tegmen
Answer: (A)
232. WBC without granules –
(A) Neutrophils
(B) Monocytes
(C) Eosinophils
(D) Basophils
Answer: (B)
233. Annual rings in a tree trunk represent –
(A) Secondary xylem
(B) Primary xylem
(C) Secondary phloem
(D) Cambium
Answer: (A)
234. Which vitamin deficiency causes scurvy?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (C)
235. Which blood vessel carries oxygenated blood?
(A) Pulmonary artery
(B) Pulmonary vein
(C) Vena cava
(D) Coronary vein
Answer: (B)
236. Starch is stored in plants in the form of –
(A) Amyloplast
(B) Chromoplast
(C) Chloroplast
(D) Elaioplast
Answer: (A)
237. Which organ produces bile?
(A) Stomach
(B) Pancreas
(C) Liver
(D) Gall bladder
Answer: (C)
238. Perisperm is –
(A) Remnant of nucellus
(B) Remnant of endosperm
(C) Remnant of integument
(D) Remnant of cotyledon
Answer: (A)
239. Which ion is necessary for blood clotting?
(A) Sodium
(B) Calcium
(C) Potassium
(D) Magnesium
Answer: (B)
240. Which plant shows leaf tendril modification?
(A) Cucumber
(B) Pumpkin
(C) Sweet pea
(D) Watermelon
Answer: (C)
241. Hemoglobin contains –
(A) Sodium
(B) Magnesium
(C) Iron
(D) Calcium
Answer: (C)
242. The radicle of embryo forms –
(A) Root
(B) Stem
(C) Leaf
(D) Flower
Answer: (A)
243. Largest human cell –
(A) Ovum
(B) Neuron
(C) Muscle cell
(D) WBC
Answer: (A)
244. Pollination by bats is called –
(A) Anemophily
(B) Entomophily
(C) Chiropterophily
(D) Hydrophily
Answer: (C)
245. Normal human body temperature –
(A) 36°C
(B) 37°C
(C) 38°C
(D) 39°C
Answer: (B)
246. Fruit of apple is –
(A) Drupe
(B) Pome
(C) Berry
(D) Capsule
Answer: (B)
247. Bicuspid valve is also known as –
(A) Mitral valve
(B) Aortic valve
(C) Pulmonary valve
(D) Tricuspid valve
Answer: (A)
248. Nucleus was discovered by –
(A) Robert Hooke
(B) Robert Brown
(C) Leeuwenhoek
(D) Schleiden
Answer: (B)
249. Which is the longest bone in human body?
(A) Humerus
(B) Tibia
(C) Femur
(D) Fibula
Answer: (C)
250. Which type of fruit is banana?
(A) Drupe
(B) Berry
(C) Capsule
(D) Nut
Answer: (B)
251. Which phylum of animals has a water vascular system?
(A) Arthropoda
(B) Mollusca
(C) Echinodermata
(D) Annelida
Answer: (C)
252. The process of fixing atmospheric nitrogen in leguminous plants is carried out by—
(A) Azotobacter
(B) Nitrosomonas
(C) Rhizobium
(D) Clostridium
Answer: (C)
253. Which part of the human brain controls posture and balance?
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Hypothalamus
Answer: (B)
254. The conducting tissue phloem is mainly responsible for transport of—
(A) Water
(B) Minerals
(C) Food
(D) Oxygen
Answer: (C)
255. Which is the excretory organ of earthworm?
(A) Malpighian tubule
(B) Nephridia
(C) Kidney
(D) Green gland
Answer: (B)
256. Which vitamin is essential for the clotting of blood?
(A) Vitamin A
(B) Vitamin B12
(C) Vitamin C
(D) Vitamin K
Answer: (D)
257. In bryophytes, the dominant generation is—
(A) Sporophyte
(B) Gametophyte
(C) Seed
(D) Embryo
Answer: (B)
258. In human blood, which cells are called “soldiers”?
(A) RBC
(B) Platelets
(C) WBC
(D) Plasma cells
Answer: (C)
259. The Casparian strip is found in—
(A) Epidermis
(B) Cortex
(C) Endodermis
(D) Pericycle
Answer: (C)
260. Which hormone regulates the circadian rhythm?
(A) Insulin
(B) Melatonin
(C) Cortisol
(D) Thyroxine
Answer: (B)
261. Which pigment is found in red algae?
(A) Chlorophyll-b
(B) Fucoxanthin
(C) Phycoerythrin
(D) Carotene
Answer: (C)
262. Which type of joint is found between atlas and axis vertebrae?
(A) Hinge joint
(B) Pivot joint
(C) Ball and socket
(D) Gliding joint
Answer: (B)
263. In plants, which tissue is responsible for secondary growth?
(A) Phloem
(B) Xylem
(C) Vascular cambium
(D) Epidermis
Answer: (C)
264. Which blood group is a universal recipient?
(A) O–
(B) AB+
(C) O+
(D) AB–
Answer: (B)
265. The outermost layer of the anther wall is—
(A) Tapetum
(B) Endothecium
(C) Epidermis
(D) Middle layer
Answer: (C)
266. Which organelle in animal cells is responsible for protein synthesis?
(A) Ribosome
(B) Golgi body
(C) Lysosome
(D) Nucleus
Answer: (A)
267. Which structure is known as the voice box in humans?
(A) Trachea
(B) Larynx
(C) Bronchi
(D) Pharynx
Answer: (B)
268. Which fungus is used in production of citric acid?
(A) Penicillium
(B) Aspergillus niger
(C) Saccharomyces
(D) Rhizopus
Answer: (B)
269. What is the normal pH of human blood?
(A) 6.8
(B) 7.4
(C) 7.0
(D) 7.8
Answer: (B)
270. The gynoecium of a flower is made up of—
(A) Stamens
(B) Carpels
(C) Sepals
(D) Petals
Answer: (B)
271. Which organ is called the “blood bank” of the human body?
(A) Kidney
(B) Liver
(C) Spleen
(D) Heart
Answer: (C)
272. Which plant tissue lacks lignin?
(A) Xylem tracheids
(B) Phloem sieve tubes
(C) Fibres
(D) Vessels
Answer: (B)
273. Which animal is a connecting link between annelida and mollusca?
(A) Peripatus
(B) Neopilina
(C) Balanoglossus
(D) Chiton
Answer: (B)
274. Which protein is essential for muscle contraction?
(A) Insulin
(B) Actin and Myosin
(C) Hemoglobin
(D) Albumin
Answer: (B)
275. The floral formula ⊕ ⚥ K(5) C(5) A5 G(2) represents—
(A) Solanaceae
(B) Fabaceae
(C) Brassicaceae
(D) Liliaceae
Answer: (A)
276. Which is the functional unit of nervous system?
(A) Axon
(B) Neuron
(C) Dendrite
(D) Synapse
Answer: (B)
277. Which group of plants are called “Amphibians of the plant kingdom”?
(A) Gymnosperms
(B) Algae
(C) Bryophytes
(D) Pteridophytes
Answer: (C)
278. Which blood corpuscles release histamine during allergic reactions?
(A) Neutrophils
(B) Basophils
(C) Eosinophils
(D) Monocytes
Answer: (B)
279. Which hormone regulates calcium level in blood?
(A) Parathormone
(B) Insulin
(C) Thyroxine
(D) Cortisol
Answer: (A)
280. Which plant is used as a source of quinine?
(A) Cinchona
(B) Neem
(C) Tulsi
(D) Amla
Answer: (A)
281. Which part of the brain regulates thirst and hunger?
(A) Cerebrum
(B) Cerebellum
(C) Hypothalamus
(D) Pons
Answer: (C)
282. Which type of fruits are formed without fertilization?
(A) True fruits
(B) Parthenocarpic fruits
(C) Composite fruits
(D) Aggregate fruits
Answer: (B)
283. Which is the main nitrogenous excretory product of birds?
(A) Urea
(B) Uric acid
(C) Ammonia
(D) Creatinine
Answer: (B)
284. Which plant hormone is known as “stress hormone”?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) Abscisic acid
Answer: (D)
285. Which human blood cells are responsible for antibody production?
(A) B-lymphocytes
(B) T-lymphocytes
(C) Monocytes
(D) Basophils
Answer: (A)
286. Which is the respiratory organ of prawn?
(A) Book lung
(B) Gills
(C) Trachea
(D) Skin
Answer: (B)
287. Which of the following plants is insectivorous?
(A) Cuscuta
(B) Viscum
(C) Nepenthes
(D) Orobanche
Answer: (C)
288. Which artery supplies blood to the kidney?
(A) Pulmonary artery
(B) Coronary artery
(C) Renal artery
(D) Carotid artery
Answer: (C)
289. In lichens, the algal partner is—
(A) Phycobiont
(B) Mycobiont
(C) Sporophyte
(D) Basidium
Answer: (A)
290. Which vitamin is synthesized by intestinal bacteria?
(A) Vitamin D
(B) Vitamin B12
(C) Vitamin A
(D) Vitamin C
Answer: (B)
291. Which is the outermost covering of plant seeds?
(A) Endosperm
(B) Cotyledon
(C) Seed coat
(D) Testa
Answer: (C)
292. The largest cranial nerve in humans is—
(A) Vagus nerve
(B) Trigeminal nerve
(C) Optic nerve
(D) Facial nerve
Answer: (B)
293. The plant structure that changes into seed after fertilization is—
(A) Ovary
(B) Ovule
(C) Embryo sac
(D) Endosperm
Answer: (B)
294. Which is the largest endocrine gland in human body?
(A) Thyroid
(B) Pituitary
(C) Adrenal
(D) Pancreas
Answer: (A)
295. Which is the pollinating agent in Vallisneria?
(A) Wind
(B) Water
(C) Insects
(D) Birds
Answer: (B)
296. The mineral calcium is essential for—
(A) Photosynthesis
(B) Muscle contraction and blood clotting
(C) DNA synthesis
(D) Enzyme activation only
Answer: (B)
297. Which animals are called jawless fishes?
(A) Rays
(B) Lampreys and Hagfish
(C) Sharks
(D) Eels
Answer: (B)
298. Which plant is used to make jute fibre?
(A) Corchorus
(B) Hibiscus
(C) Crotalaria
(D) Linum
Answer: (A)
299. Which organelle contains hydrolytic enzymes for intracellular digestion?
(A) Ribosome
(B) Lysosome
(C) Mitochondria
(D) Endoplasmic reticulum
Answer: (B)
300. Which part of the human eye controls the amount of light entering?
(A) Retina
(B) Iris
(C) Lens
(D) Cornea
Answer: (B)
301. Which of the following is a cartilaginous fish?
(A) Hilsa
(B) Shark
(C) Rohu
(D) Catla
Answer: (B)
302. The reserve food material in red algae is—
(A) Starch
(B) Floridean starch
(C) Glycogen
(D) Cellulose
Answer: (B)
303. Which gland is called the “master gland”?
(A) Thyroid
(B) Pituitary
(C) Adrenal
(D) Pancreas
Answer: (B)
304. The main nitrogenous excretory product of amphibians is—
(A) Ammonia
(B) Urea
(C) Uric acid
(D) Creatinine
Answer: (B)
305. In C4 plants, the first stable product of carbon fixation is—
(A) Oxaloacetic acid (OAA)
(B) Phosphoglyceric acid (PGA)
(C) Malic acid
(D) Pyruvic acid
Answer: (A)
306. The human heart is made up of—
(A) Smooth muscle
(B) Skeletal muscle
(C) Cardiac muscle
(D) Connective tissue
Answer: (C)
307. The term “monocotyledon” refers to plants having—
(A) One seed coat
(B) One cotyledon
(C) One carpel
(D) One embryo sac
Answer: (B)
308. The human kidney is located in which region of the body?
(A) Thoracic
(B) Pelvic
(C) Abdominal
(D) Cranial
Answer: (C)
309. Which is the smallest living unit of life?
(A) Atom
(B) Cell
(C) Tissue
(D) Organelle
Answer: (B)
310. In gymnosperms, the ovules are—
(A) Naked
(B) Covered by ovary
(C) Enclosed in carpel
(D) Enclosed in fruit
Answer: (A)
311. Which artery carries deoxygenated blood?
(A) Pulmonary artery
(B) Aorta
(C) Carotid artery
(D) Coronary artery
Answer: (A)
312. The enzyme that digests protein in the stomach is—
(A) Ptyalin
(B) Pepsin
(C) Lipase
(D) Trypsin
Answer: (B)
313. Which plant tissue provides mechanical support?
(A) Collenchyma
(B) Phloem
(C) Xylem vessels
(D) Epidermis
Answer: (A)
314. In humans, the sex of the child is determined by—
(A) Mother’s egg
(B) Father’s sperm
(C) Hormones
(D) Environmental factors
Answer: (B)
315. Which gas is released during photorespiration?
(A) O₂
(B) CO₂
(C) H₂
(D) CH₄
Answer: (B)
316. The functional unit of the kidney is—
(A) Alveolus
(B) Nephron
(C) Glomerulus
(D) Bowman’s capsule
Answer: (B)
317. Which of the following is a colonial alga?
(A) Chlamydomonas
(B) Volvox
(C) Ulothrix
(D) Spirogyra
Answer: (B)
318. Which organ secretes bile juice?
(A) Stomach
(B) Liver
(C) Pancreas
(D) Gall bladder
Answer: (B)
319. Which tissue in plants transports water and minerals?
(A) Phloem
(B) Xylem
(C) Cambium
(D) Epidermis
Answer: (B)
320. Which vitamin prevents scurvy?
(A) Vitamin A
(B) Vitamin B12
(C) Vitamin C
(D) Vitamin D
Answer: (C)
321. Which worm causes filariasis?
(A) Ascaris
(B) Wuchereria bancrofti
(C) Enterobius
(D) Taenia solium
Answer: (B)
322. Stomata open due to—
(A) Decrease in guard cell turgidity
(B) Increase in guard cell turgidity
(C) Loss of chlorophyll
(D) Loss of water
Answer: (B)
323. Which chamber of the human heart pumps oxygenated blood to the body?
(A) Left atrium
(B) Left ventricle
(C) Right atrium
(D) Right ventricle
Answer: (B)
324. Which is the main photosynthetic pigment?
(A) Carotene
(B) Chlorophyll-a
(C) Xanthophyll
(D) Phycocyanin
Answer: (B)
325. The longest bone in the human body is—
(A) Tibia
(B) Fibula
(C) Femur
(D) Humerus
Answer: (C)
326. Which plant is known as “living fossil”?
(A) Pinus
(B) Ginkgo biloba
(C) Cycas
(D) Sequoia
Answer: (B)
327. Which blood component helps in clotting?
(A) Plasma
(B) RBC
(C) WBC
(D) Platelets
Answer: (D)
328. The floral formula ⚥ K5 C5 A5+5 G(2) represents—
(A) Fabaceae
(B) Solanaceae
(C) Liliaceae
(D) Malvaceae
Answer: (D)
329. The respiratory organ of fish is—
(A) Trachea
(B) Lungs
(C) Gills
(D) Skin
Answer: (C)
330. Which protein carries oxygen in human blood?
(A) Actin
(B) Hemoglobin
(C) Myosin
(D) Albumin
Answer: (B)
331. The outermost covering of a plant cell is—
(A) Plasma membrane
(B) Cell wall
(C) Tonoplast
(D) Cuticle
Answer: (B)
332. Which gland secretes insulin?
(A) Liver
(B) Pancreas
(C) Thyroid
(D) Pituitary
Answer: (B)
333. The process of cell division in gamete formation is—
(A) Mitosis
(B) Meiosis
(C) Amitosis
(D) Binary fission
Answer: (B)
334. In mosses, the sporophyte is—
(A) Free living
(B) Dependent on gametophyte
(C) Independent with roots
(D) A seed-bearing structure
Answer: (B)
335. Which blood cells are biconcave and lack nucleus?
(A) WBC
(B) RBC
(C) Platelets
(D) Lymphocytes
Answer: (B)
336. In double fertilization of angiosperms, one male gamete fuses with egg and another with—
(A) Endosperm nucleus
(B) Secondary nucleus
(C) Polar nuclei
(D) Embryo sac
Answer: (C)
337. The pancreas acts as—
(A) Only exocrine gland
(B) Only endocrine gland
(C) Both endocrine and exocrine gland
(D) Lymphoid organ
Answer: (C)
338. Which plant tissue is responsible for increase in girth?
(A) Apical meristem
(B) Intercalary meristem
(C) Vascular cambium
(D) Epidermis
Answer: (C)
339. Which blood vessel carries blood from intestine to liver?
(A) Hepatic artery
(B) Hepatic portal vein
(C) Renal vein
(D) Pulmonary vein
Answer: (B)
340. Which pigment is responsible for brown color in brown algae?
(A) Chlorophyll-b
(B) Phycoerythrin
(C) Fucoxanthin
(D) Carotene
Answer: (C)
341. The number of cranial nerves in humans is—
(A) 10
(B) 12
(C) 14
(D) 16
Answer: (B)
342. Which plant hormone promotes cell division?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) Abscisic acid
Answer: (C)
343. Which connective tissue stores fat in the body?
(A) Bone
(B) Adipose tissue
(C) Cartilage
(D) Blood
Answer: (B)
344. The perisperm of seeds is derived from—
(A) Integument
(B) Endosperm
(C) Nucellus
(D) Embryo sac
Answer: (C)
345. The functional unit of lungs is—
(A) Bronchi
(B) Bronchioles
(C) Alveoli
(D) Pleura
Answer: (C)
346. Which fungus is used in bread making?
(A) Penicillium
(B) Aspergillus
(C) Saccharomyces cerevisiae
(D) Rhizopus stolonifer
Answer: (C)
347. Which vitamin deficiency causes night blindness?
(A) Vitamin B1
(B) Vitamin C
(C) Vitamin A
(D) Vitamin D
Answer: (C)
348. The cork cells of plants are impervious to water due to—
(A) Lignin
(B) Pectin
(C) Suberin
(D) Cutin
Answer: (C)
349. The outermost membrane covering the brain is—
(A) Arachnoid
(B) Dura mater
(C) Pia mater
(D) Cerebral cortex
Answer: (B)
350. Which structure in plants develops into fruit?
(A) Ovary
(B) Ovule
(C) Embryo
(D) Endosperm
Answer: (A)
351. Which animal is known as the “flying mammal”?
(A) Pigeon
(B) Bat
(C) Butterfly
(D) Flying fish
Answer: (B)
352. Which pigment gives green color to plants?
(A) Chlorophyll-a
(B) Chlorophyll-b
(C) Xanthophyll
(D) Carotene
Answer: (A)
353. In humans, digestion of starch begins in—
(A) Stomach
(B) Mouth
(C) Small intestine
(D) Large intestine
Answer: (B)
354. The mode of nutrition in fungi is—
(A) Autotrophic
(B) Saprophytic
(C) Parasitic
(D) Symbiotic
Answer: (B)
355. Which type of blood cells are called “soldiers of the body”?
(A) RBC
(B) WBC
(C) Platelets
(D) Plasma
Answer: (B)
356. The stele in monocot root is—
(A) Protostele
(B) Siphonostele
(C) Atactostele
(D) Polycyclic
Answer: (C)
357. The pacemaker of human heart is—
(A) AV node
(B) SA node
(C) Purkinje fiber
(D) Bundle of His
Answer: (B)
358. The cashew nut is—
(A) Seed
(B) Fruit
(C) Cotyledon
(D) Pericarp
Answer: (A)
359. Which hormone regulates calcium level in blood?
(A) Insulin
(B) Glucagon
(C) Parathormone
(D) Thyroxine
Answer: (C)
360. The exoskeleton of arthropods is made up of—
(A) Lignin
(B) Chitin
(C) Cellulose
(D) Collagen
Answer: (B)
361. The study of pollen grains is called—
(A) Phycology
(B) Mycology
(C) Palynology
(D) Cytology
Answer: (C)
362. Which is the longest nerve in humans?
(A) Vagus nerve
(B) Sciatic nerve
(C) Optic nerve
(D) Facial nerve
Answer: (B)
363. The plants which grow in saline soil are called—
(A) Hydrophytes
(B) Xerophytes
(C) Halophytes
(D) Mesophytes
Answer: (C)
364. Which blood group is called the universal donor?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)
365. The apical meristem is responsible for—
(A) Increase in girth
(B) Increase in length
(C) Secondary growth
(D) Cork formation
Answer: (B)
366. The part of brain that controls balance and posture is—
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Hypothalamus
Answer: (B)
367. The leaves of C4 plants have—
(A) Kranz anatomy
(B) Collenchyma
(C) Hydathodes
(D) Bulliform cells only
Answer: (A)
368. Which organ stores bile juice?
(A) Pancreas
(B) Gall bladder
(C) Liver
(D) Small intestine
Answer: (B)
369. DNA is made up of—
(A) Nucleotides
(B) Amino acids
(C) Fatty acids
(D) Sugars only
Answer: (A)
370. The body of sponges is supported by—
(A) Spicules
(B) Notochord
(C) Bones
(D) Cartilage
Answer: (A)
371. The edible part of apple is—
(A) Endosperm
(B) Pericarp
(C) Thalamus
(D) Ovary wall
Answer: (C)
372. Which type of joint is found in human skull bones?
(A) Hinge joint
(B) Fixed joint
(C) Ball and socket joint
(D) Pivot joint
Answer: (B)
373. The reaction center of photosystem II contains—
(A) P680
(B) P700
(C) P720
(D) P650
Answer: (A)
374. In which blood vessels is blood pressure highest?
(A) Veins
(B) Arteries
(C) Capillaries
(D) Venules
Answer: (B)
375. In plants, the outermost protective layer is—
(A) Endodermis
(B) Cortex
(C) Epidermis
(D) Pericycle
Answer: (C)
376. Which vitamin is also called calciferol?
(A) Vitamin A
(B) Vitamin B12
(C) Vitamin C
(D) Vitamin D
Answer: (D)
377. Which blood cells are called “scavengers”?
(A) Basophils
(B) Neutrophils
(C) Monocytes
(D) Lymphocytes
Answer: (C)
378. Which plant is known as “Terror of Bengal”?
(A) Eichhornia (Water hyacinth)
(B) Pistia
(C) Hydrilla
(D) Wolffia
Answer: (A)
379. The functional and structural unit of nervous system is—
(A) Axon
(B) Neuron
(C) Synapse
(D) Brain
Answer: (B)
380. Which part of maize grain is rich in proteins?
(A) Endosperm
(B) Aleurone layer
(C) Embryo
(D) Scutellum
Answer: (B)
381. The hormone secreted by adrenal medulla is—
(A) Cortisol
(B) Aldosterone
(C) Adrenaline
(D) Insulin
Answer: (C)
382. Which pigment is found in red algae?
(A) Fucoxanthin
(B) Phycoerythrin
(C) Xanthophyll
(D) Chlorophyll-b
Answer: (B)
383. Which is the voice box of humans?
(A) Trachea
(B) Larynx
(C) Pharynx
(D) Bronchi
Answer: (B)
384. Which plant family shows nodules with nitrogen-fixing bacteria?
(A) Poaceae
(B) Fabaceae
(C) Solanaceae
(D) Malvaceae
Answer: (B)
385. Which artery supplies blood to the heart itself?
(A) Coronary artery
(B) Carotid artery
(C) Subclavian artery
(D) Aorta
Answer: (A)
386. In Bryophytes, the dominant generation is—
(A) Sporophyte
(B) Gametophyte
(C) Both equally
(D) Alternation absent
Answer: (B)
387. The organ of Corti is found in—
(A) Eye
(B) Ear
(C) Tongue
(D) Nose
Answer: (B)
388. Which plant hormone causes dormancy of seeds?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) Abscisic acid
Answer: (D)
389. Which blood group is called universal recipient?
(A) A
(B) B
(C) AB
(D) O
Answer: (C)
390. Which part of the brain regulates body temperature?
(A) Thalamus
(B) Hypothalamus
(C) Cerebellum
(D) Medulla
Answer: (B)
391. The edible part of coconut is—
(A) Endosperm
(B) Pericarp
(C) Cotyledon
(D) Ovary wall
Answer: (A)
392. Which vitamin helps in blood clotting?
(A) Vitamin A
(B) Vitamin K
(C) Vitamin C
(D) Vitamin D
Answer: (B)
393. Which plant tissue transports food?
(A) Xylem
(B) Phloem
(C) Cambium
(D) Cortex
Answer: (B)
394. Which chamber of heart receives deoxygenated blood?
(A) Left atrium
(B) Left ventricle
(C) Right atrium
(D) Right ventricle
Answer: (C)
395. The process of conversion of starch to sugar is catalyzed by—
(A) Lipase
(B) Amylase
(C) Maltase
(D) Zymase
Answer: (B)
396. The edible part of pea is—
(A) Seed
(B) Pod wall
(C) Endosperm
(D) Cotyledon only
Answer: (A)
397. Which mineral is important for hemoglobin synthesis?
(A) Calcium
(B) Phosphorus
(C) Iron
(D) Magnesium
Answer: (C)
398. Which stage of cell division shows crossing over?
(A) Metaphase I
(B) Anaphase I
(C) Prophase I
(D) Telophase I
Answer: (C)
399. Which structure is called “suicidal bag” of the cell?
(A) Ribosome
(B) Lysosome
(C) Golgi body
(D) Peroxisome
Answer: (B)
400. The respiratory organ in earthworm is—
(A) Gills
(B) Lungs
(C) Skin
(D) Trachea
Answer: (C)
401. Which blood protein helps in clotting?
(A) Fibrinogen
(B) Albumin
(C) Globulin
(D) Hemoglobin
Answer: (A)
402. The largest flower in the world is—
(A) Rafflesia
(B) Amorphophallus
(C) Titan arum
(D) Victoria regia
Answer: (A)
403. In humans, gas exchange occurs in—
(A) Bronchi
(B) Alveoli
(C) Trachea
(D) Bronchioles
Answer: (B)
404. The chief nitrogenous waste in birds is—
(A) Urea
(B) Uric acid
(C) Ammonia
(D) Creatinine
Answer: (B)
405. The first stable product of C3 cycle is—
(A) Oxaloacetate
(B) 3-PGA
(C) Malate
(D) Pyruvate
Answer: (B)
406. The connective tissue that connects muscles to bones is—
(A) Ligament
(B) Tendon
(C) Cartilage
(D) Fascia
Answer: (B)
407. The gynoecium of sunflower is—
(A) Apocarpous
(B) Syncarpous
(C) Monocarpous
(D) Polycarpellary free
Answer: (B)
408. Which organelle is called “powerhouse of the cell”?
(A) Ribosome
(B) Golgi body
(C) Mitochondria
(D) Chloroplast
Answer: (C)
409. The hormone insulin is secreted by—
(A) Alpha cells
(B) Beta cells
(C) Delta cells
(D) Acinar cells
Answer: (B)
410. The process of fusion of gametes is called—
(A) Fertilization
(B) Pollination
(C) Syngamy
(D) Both A & C
Answer: (D)
411. Which animal has a water vascular system?
(A) Hydra
(B) Earthworm
(C) Starfish
(D) Cockroach
Answer: (C)
412. Which pigment is responsible for brown color in algae?
(A) Chlorophyll-c
(B) Fucoxanthin
(C) Carotene
(D) Phycocyanin
Answer: (B)
413. The valve between left atrium and left ventricle is—
(A) Tricuspid
(B) Bicuspid
(C) Semilunar
(D) Pulmonary
Answer: (B)
414. The plants growing on other plants for support are called—
(A) Epiphytes
(B) Parasites
(C) Saprophytes
(D) Halophytes
Answer: (A)
415. Which blood vessels carry blood from lungs to heart?
(A) Pulmonary veins
(B) Pulmonary arteries
(C) Vena cava
(D) Aorta
Answer: (A)
416. The seeds of orchid show—
(A) Endosperm present
(B) Endosperm absent
(C) Albuminous nature
(D) Double endosperm
Answer: (B)
417. Which hormone is secreted by the pineal gland?
(A) Melatonin
(B) Oxytocin
(C) Cortisol
(D) Adrenaline
Answer: (A)
418. Which type of reproduction produces clones?
(A) Sexual reproduction
(B) Asexual reproduction
(C) Parthenogenesis
(D) Conjugation
Answer: (B)
419. The largest phylum of animal kingdom is—
(A) Mollusca
(B) Annelida
(C) Arthropoda
(D) Chordata
Answer: (C)
420. The enzyme that digests proteins in stomach is—
(A) Lipase
(B) Amylase
(C) Pepsin
(D) Trypsin
Answer: (C)
421. The perisperm of seed is derived from—
(A) Endosperm
(B) Nucellus
(C) Integument
(D) Embryo
Answer: (B)
422. The hormone that prepares uterus for pregnancy is—
(A) Estrogen
(B) Progesterone
(C) Prolactin
(D) Oxytocin
Answer: (B)
423. Which animal is called a living fossil?
(A) Peripatus
(B) Limulus
(C) Latimeria
(D) All of these
Answer: (D)
424. In photosynthesis, oxygen is released from—
(A) CO₂
(B) H₂O
(C) Glucose
(D) ATP
Answer: (B)
425. Which organ purifies blood in humans?
(A) Heart
(B) Kidney
(C) Liver
(D) Lungs
Answer: (B)
426. The microspore mother cell is—
(A) Haploid
(B) Diploid
(C) Triploid
(D) Tetraploid
Answer: (B)
427. The hormone oxytocin is secreted by—
(A) Thyroid gland
(B) Pituitary gland
(C) Adrenal gland
(D) Pancreas
Answer: (B)
428. Which blood vessel carries oxygenated blood from heart to body?
(A) Pulmonary artery
(B) Aorta
(C) Vena cava
(D) Hepatic vein
Answer: (B)
429. The largest living amphibian is—
(A) Giant salamander
(B) Frog
(C) Toad
(D) Newt
Answer: (A)
430. CAM photosynthesis occurs in—
(A) Rice
(B) Wheat
(C) Cactus
(D) Pea
Answer: (C)
431. Which vitamin deficiency causes rickets?
(A) Vitamin A
(B) Vitamin D
(C) Vitamin C
(D) Vitamin K
Answer: (B)
432. In plants, casparian strips are found in—
(A) Epidermis
(B) Endodermis
(C) Cortex
(D) Pericycle
Answer: (B)
433. The longest bone in the human body is—
(A) Humerus
(B) Femur
(C) Tibia
(D) Fibula
Answer: (B)
434. In gymnosperms, pollination is mostly—
(A) Entomophilous
(B) Anemophilous
(C) Hydrophilous
(D) Zoophilous
Answer: (B)
435. Which blood cells release histamine during allergic reaction?
(A) Basophils
(B) Neutrophils
(C) Monocytes
(D) Eosinophils
Answer: (A)
436. Which plant is commonly called “living fossil”?
(A) Ginkgo biloba
(B) Cycas
(C) Pinus
(D) Sequoia
Answer: (A)
437. The functional unit of kidney is—
(A) Glomerulus
(B) Nephron
(C) Ureter
(D) Collecting duct
Answer: (B)
438. Sieve tubes are characteristic of—
(A) Xylem
(B) Phloem
(C) Cambium
(D) Pericycle
Answer: (B)
439. The respiratory pigment of earthworm is—
(A) Hemocyanin
(B) Hemoglobin
(C) Myoglobin
(D) Chlorocruorin
Answer: (B)
440. The mode of nutrition in green plants is—
(A) Autotrophic
(B) Heterotrophic
(C) Saprophytic
(D) Parasitic
Answer: (A)
441. Which enzyme converts fibrinogen to fibrin?
(A) Pepsin
(B) Thrombin
(C) Trypsin
(D) Renin
Answer: (B)
442. In plants, the exarch condition of xylem is found in—
(A) Root
(B) Stem
(C) Leaf
(D) Flower
Answer: (A)
443. Which part of human brain controls voluntary actions?
(A) Cerebellum
(B) Cerebrum
(C) Medulla
(D) Hypothalamus
Answer: (B)
444. The fruit of banana is—
(A) Drupe
(B) Berry
(C) Capsule
(D) Nut
Answer: (B)
445. Which valve prevents backflow of blood from right ventricle to right atrium?
(A) Bicuspid
(B) Tricuspid
(C) Pulmonary
(D) Aortic
Answer: (B)
446. The photosynthetic pigment of cyanobacteria is—
(A) Chlorophyll-a
(B) Chlorophyll-b
(C) Phycocyanin
(D) Both A & C
Answer: (D)
447. Which joint allows movement in all directions?
(A) Hinge joint
(B) Pivot joint
(C) Ball and socket joint
(D) Fixed joint
Answer: (C)
448. The tissue connecting xylem and phloem is—
(A) Pith
(B) Cambium
(C) Cortex
(D) Endodermis
Answer: (B)
449. Which enzyme is absent in gastric juice of infants?
(A) Pepsin
(B) Renin
(C) Lipase
(D) Amylase
Answer: (D)
450. The mode of reproduction in Amoeba is—
(A) Binary fission
(B) Budding
(C) Fragmentation
(D) Multiple fission
Answer: (A)
451. The structural and functional unit of nervous system is—
(A) Nephron
(B) Neuron
(C) Axon
(D) Dendrite
Answer: (B)
452. The endosperm in angiosperms is—
(A) Haploid
(B) Diploid
(C) Triploid
(D) Tetraploid
Answer: (C)
453. Which blood cells act as “soldiers” of the body?
(A) Platelets
(B) RBC
(C) WBC
(D) Plasma
Answer: (C)
454. Which plant hormone is also called “stress hormone”?
(A) Auxin
(B) Cytokinin
(C) Abscisic acid
(D) Gibberellin
Answer: (C)
455. Which enzyme is secreted by salivary glands?
(A) Amylase
(B) Lipase
(C) Pepsin
(D) Trypsin
Answer: (A)
456. The plants that grow in saline soil are—
(A) Halophytes
(B) Mesophytes
(C) Xerophytes
(D) Epiphytes
Answer: (A)
457. Which blood group is called universal donor?
(A) A
(B) AB
(C) O
(D) B
Answer: (C)
458. In bryophytes, the dominant generation is—
(A) Sporophyte
(B) Gametophyte
(C) Zygote
(D) Embryo
Answer: (B)
459. Which mineral is essential for clotting of blood?
(A) Calcium
(B) Iron
(C) Sodium
(D) Magnesium
Answer: (A)
460. The reaction center of photosystem II is—
(A) P680
(B) P700
(C) P600
(D) P720
Answer: (A)
461. Which organelle is involved in protein synthesis?
(A) Ribosome
(B) Golgi body
(C) Lysosome
(D) Chloroplast
Answer: (A)
462. The functional unit of liver is—
(A) Hepatocyte
(B) Nephron
(C) Alveolus
(D) Lobule
Answer: (D)
463. Which algae are known as “blue-green algae”?
(A) Chlorophyceae
(B) Rhodophyceae
(C) Cyanobacteria
(D) Phaeophyceae
Answer: (C)
464. Which gland is called the “master gland”?
(A) Thyroid
(B) Pituitary
(C) Adrenal
(D) Pineal
Answer: (B)
465. The plant stem showing anomalous secondary growth is—
(A) Maize
(B) Bougainvillea
(C) Wheat
(D) Mustard
Answer: (B)
466. Which vitamin is essential for vision?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (A)
467. Which animal shows bilateral symmetry?
(A) Hydra
(B) Starfish
(C) Earthworm
(D) Amoeba
Answer: (C)
468. The sugar in DNA is—
(A) Glucose
(B) Ribose
(C) Deoxyribose
(D) Fructose
Answer: (C)
469. The first living cell was discovered by—
(A) Robert Hooke
(B) A. Leeuwenhoek
(C) Schleiden
(D) Schwann
Answer: (B)
470. The plant tissue responsible for secondary thickening is—
(A) Phloem
(B) Cambium
(C) Xylem
(D) Pith
Answer: (B)
471. Which type of immunity is provided by vaccination?
(A) Natural passive
(B) Natural active
(C) Artificial active
(D) Artificial passive
Answer: (C)
472. The green alga used in genetics studies is—
(A) Volvox
(B) Spirogyra
(C) Chlamydomonas
(D) Ulothrix
Answer: (C)
473. The largest artery in human body is—
(A) Pulmonary artery
(B) Aorta
(C) Coronary artery
(D) Carotid artery
Answer: (B)
474. Which gas is required in photorespiration?
(A) O₂
(B) CO₂
(C) H₂O
(D) CH₄
Answer: (A)
475. Which joint connects skull with vertebral column?
(A) Pivot joint
(B) Hinge joint
(C) Ball and socket
(D) Saddle joint
Answer: (A)
476. The edible part of apple is—
(A) Endosperm
(B) Pericarp
(C) Thalamus
(D) Cotyledon
Answer: (C)
477. The hormone secreted during fear and stress is—
(A) Adrenaline
(B) Insulin
(C) Thyroxine
(D) Estrogen
Answer: (A)
478. Which type of phyllotaxy is found in guava?
(A) Alternate
(B) Opposite
(C) Whorled
(D) Spiral
Answer: (B)
479. The pacemaker of heart is—
(A) AV node
(B) SA node
(C) Purkinje fibers
(D) Bundle of His
Answer: (B)
480. The largest gland in human body is—
(A) Liver
(B) Pancreas
(C) Thyroid
(D) Adrenal
Answer: (A)
481. The term “genetics” was coined by—
(A) Mendel
(B) Bateson
(C) Morgan
(D) Darwin
Answer: (B)
482. Which pigment absorbs maximum light in photosynthesis?
(A) Chlorophyll-a
(B) Chlorophyll-b
(C) Carotene
(D) Xanthophyll
Answer: (A)
483. In humans, which part regulates body temperature?
(A) Cerebrum
(B) Cerebellum
(C) Hypothalamus
(D) Medulla
Answer: (C)
484. The roots of leguminous plants have—
(A) Mycorrhiza
(B) Rhizobium nodules
(C) Algal association
(D) None of these
Answer: (B)
485. Which is a vector-borne disease?
(A) Tuberculosis
(B) Malaria
(C) Tetanus
(D) Cholera
Answer: (B)
486. The floral formula of pea is—
(A) ⊕ K(5) C5 A∞ G(5)
(B) % K(5) C1+2+(2) A(9)+1 G1
(C) ⊕ K(5) C(5) A5 G(2)
(D) % K(5) C(5) A(10) G1
Answer: (B)
487. Which blood vessel carries blood from digestive tract to liver?
(A) Hepatic vein
(B) Hepatic portal vein
(C) Renal vein
(D) Aorta
Answer: (B)
488. Which is the contractile protein of muscle?
(A) Tubulin
(B) Actin
(C) Myosin
(D) Both B & C
Answer: (D)
489. Which layer of leaf has maximum chloroplasts?
(A) Upper epidermis
(B) Palisade mesophyll
(C) Spongy mesophyll
(D) Lower epidermis
Answer: (B)
490. The deficiency of iodine causes—
(A) Rickets
(B) Scurvy
(C) Goiter
(D) Night blindness
Answer: (C)
491. Which type of placenta is found in humans?
(A) Epitheliochorial
(B) Endotheliochorial
(C) Hemochorial
(D) Synepitheliochorial
Answer: (C)
492. The genetic material of retrovirus is—
(A) DNA
(B) RNA
(C) Protein
(D) DNA + RNA
Answer: (B)
493. The edible part of coconut is—
(A) Endosperm
(B) Pericarp
(C) Cotyledon
(D) Seed coat
Answer: (A)
494. Which cells secrete hydrochloric acid in stomach?
(A) Chief cells
(B) Goblet cells
(C) Parietal cells
(D) Acinar cells
Answer: (C)
495. The exine of pollen grain is made up of—
(A) Cellulose
(B) Pectin
(C) Sporopollenin
(D) Hemicellulose
Answer: (C)
496. The normal blood pressure of an adult human is—
(A) 80/120 mmHg
(B) 70/110 mmHg
(C) 90/140 mmHg
(D) 85/115 mmHg
Answer: (A)
497. Which plant is known as “terror of Bengal”?
(A) Eichhornia crassipes
(B) Pistia
(C) Azolla
(D) Salvinia
Answer: (A)
498. The cranial nerves in humans are—
(A) 10 pairs
(B) 12 pairs
(C) 14 pairs
(D) 24 pairs
Answer: (B)
499. Which organ is affected in jaundice?
(A) Heart
(B) Kidney
(C) Liver
(D) Lungs
Answer: (C)
500. Which structure carries sperm from epididymis to urethra?
(A) Vas deferens
(B) Seminal vesicle
(C) Ureter
(D) Urethra
Answer: (A)
501. Which blood pigment carries oxygen in humans?
(A) Hemoglobin
(B) Myoglobin
(C) Chlorocruorin
(D) Hemocyanin
Answer: (A)
502. C4 plants show high productivity because of—
(A) Kranz anatomy
(B) High transpiration rate
(C) CAM pathway
(D) Short life cycle
Answer: (A)
503. The functional unit of kidney is—
(A) Neuron
(B) Nephron
(C) Alveolus
(D) Lobule
Answer: (B)
504. Which algae is known as “red algae”?
(A) Chlorophyceae
(B) Phaeophyceae
(C) Rhodophyceae
(D) Cyanobacteria
Answer: (C)
505. The sound box in birds is called—
(A) Syrinx
(B) Larynx
(C) Bronchi
(D) Trachea
Answer: (A)
506. The powerhouse of cell is—
(A) Ribosome
(B) Golgi body
(C) Mitochondria
(D) Chloroplast
Answer: (C)
507. Which plant tissue conducts organic food?
(A) Xylem
(B) Phloem
(C) Cambium
(D) Collenchyma
Answer: (B)
508. In humans, bile is stored in—
(A) Liver
(B) Gall bladder
(C) Pancreas
(D) Duodenum
Answer: (B)
509. Which of the following plants is insectivorous?
(A) Nepenthes
(B) Ficus
(C) Pinus
(D) Riccia
Answer: (A)
510. The organ of Corti is related to—
(A) Smell
(B) Balance
(C) Hearing
(D) Vision
Answer: (C)
511. Which element is central in chlorophyll molecule?
(A) Magnesium
(B) Iron
(C) Copper
(D) Manganese
Answer: (A)
512. Which blood cells secrete antibodies?
(A) Neutrophils
(B) B-lymphocytes (plasma cells)
(C) Monocytes
(D) T-lymphocytes
Answer: (B)
513. The storage polysaccharide in plants is—
(A) Starch
(B) Glycogen
(C) Cellulose
(D) Inulin
Answer: (A)
514. The longest bone in human body is—
(A) Tibia
(B) Femur
(C) Humerus
(D) Radius
Answer: (B)
515. In dicot root, xylem is—
(A) Exarch
(B) Endarch
(C) Mesarch
(D) Centarch
Answer: (A)
516. The valve between left atrium and left ventricle is—
(A) Tricuspid
(B) Bicuspid/Mitral
(C) Semilunar
(D) None
Answer: (B)
517. The reserve food in Rhizopus is—
(A) Oil
(B) Glycogen
(C) Starch
(D) Protein
Answer: (B)
518. Which vitamin helps in absorption of calcium?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (D)
519. Which is the largest phylum of animal kingdom?
(A) Mollusca
(B) Arthropoda
(C) Annelida
(D) Chordata
Answer: (B)
520. In respiration, the final hydrogen acceptor is—
(A) CO₂
(B) NAD⁺
(C) Oxygen
(D) FAD
Answer: (C)
521. Which plant is called “living fossil”?
(A) Ginkgo
(B) Pinus
(C) Cycas
(D) Selaginella
Answer: (A)
522. The number of spinal nerves in humans is—
(A) 31 pairs
(B) 33 pairs
(C) 12 pairs
(D) 30 pairs
Answer: (A)
523. Double fertilization is a unique feature of—
(A) Gymnosperms
(B) Bryophytes
(C) Angiosperms
(D) Pteridophytes
Answer: (C)
524. Which is the respiratory pigment in earthworm?
(A) Hemoglobin
(B) Hemerythrin
(C) Chlorocruorin
(D) Hemocyanin
Answer: (C)
525. The end product of glycolysis is—
(A) Acetyl-CoA
(B) Pyruvate
(C) Lactate
(D) ATP only
Answer: (B)
526. The edible part of banana is—
(A) Fruit wall
(B) Endosperm
(C) Pericarp + Mesocarp
(D) Thalamus
Answer: (C)
527. The hormone responsible for milk ejection is—
(A) Prolactin
(B) Oxytocin
(C) Estrogen
(D) Progesterone
Answer: (B)
528. Which is the chief nitrogenous waste in humans?
(A) Uric acid
(B) Ammonia
(C) Urea
(D) Creatinine
Answer: (C)
529. Which type of ovary is found in mustard flower?
(A) Superior
(B) Inferior
(C) Half-inferior
(D) None
Answer: (A)
530. Which organelle is called “suicidal bag”?
(A) Ribosome
(B) Lysosome
(C) Peroxisome
(D) Plastid
Answer: (B)
531. In human eye, image is formed on—
(A) Cornea
(B) Lens
(C) Iris
(D) Retina
Answer: (D)
532. Which is the floral formula of Solanaceae?
(A) ⊕ K(5) C(5) A5 G(2)
(B) % K(5) C1+2+(2) A(9)+1 G1
(C) ⊕ K(5) C(5) A5 G(2)
(D) ⊕ K(5) C(5) A(5) G(2)
Answer: (A)
533. Which part of brain controls voluntary movement?
(A) Cerebrum
(B) Cerebellum
(C) Medulla
(D) Hypothalamus
Answer: (A)
534. In onion bulb, the edible part is—
(A) Stem
(B) Leaves
(C) Roots
(D) Flowers
Answer: (B)
535. The normal human body temperature is—
(A) 36.4°C
(B) 37°C
(C) 37.5°C
(D) 38°C
Answer: (B)
536. In mosses, the sporophyte is—
(A) Independent
(B) Dependent on gametophyte
(C) Free-living
(D) Saprophytic
Answer: (B)
537. Which hormone regulates circadian rhythm?
(A) Thyroxine
(B) Melatonin
(C) Cortisol
(D) Prolactin
Answer: (B)
538. The largest lymphatic organ is—
(A) Tonsil
(B) Lymph node
(C) Thymus
(D) Spleen
Answer: (D)
539. The root cap is absent in—
(A) Mustard
(B) Maize
(C) Hydrilla
(D) Pistia
Answer: (C)
540. Which ion is essential for muscle contraction?
(A) Na⁺
(B) Ca²⁺
(C) K⁺
(D) Mg²⁺
Answer: (B)
541. The edible part of pea seed is—
(A) Seed coat
(B) Embryo
(C) Endosperm
(D) Cotyledons
Answer: (D)
542. Which valve prevents backflow of blood from right ventricle to right atrium?
(A) Bicuspid
(B) Tricuspid
(C) Semilunar
(D) Aortic
Answer: (B)
543. The plants which flower once in their lifetime are—
(A) Annuals
(B) Biennials
(C) Monocarpic
(D) Polycarpic
Answer: (C)
544. The respiratory center is located in—
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Hypothalamus
Answer: (C)
545. Which is an example of symbiotic nitrogen fixation?
(A) Azotobacter
(B) Nostoc
(C) Rhizobium
(D) Clostridium
Answer: (C)
546. The yellow color of urine is due to—
(A) Biliverdin
(B) Urochrome
(C) Creatinine
(D) Urea
Answer: (B)
547. In sunflower, the type of inflorescence is—
(A) Spike
(B) Capitulum
(C) Raceme
(D) Corymb
Answer: (B)
548. Which organ secretes insulin?
(A) Liver
(B) Pancreas
(C) Kidney
(D) Stomach
Answer: (B)
549. Which vitamin deficiency causes night blindness?
(A) Vitamin A
(B) Vitamin B₁
(C) Vitamin C
(D) Vitamin K
Answer: (A)
550. Which animal is viviparous?
(A) Frog
(B) Hen
(C) Human
(D) Fish
Answer: (C)
551. Which blood group is called the universal donor?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)
552. The opening and closing of stomata is regulated by—
(A) Guard cells
(B) Palisade cells
(C) Spongy mesophyll
(D) Epidermal cells
Answer: (A)
553. Which part of the brain controls temperature regulation?
(A) Cerebellum
(B) Hypothalamus
(C) Medulla
(D) Cerebrum
Answer: (B)
554. Which pigment gives brown color to Phaeophyceae?
(A) Fucoxanthin
(B) Chlorophyll b
(C) Phycocyanin
(D) Phycoerythrin
Answer: (A)
555. The smallest WBC is—
(A) Neutrophil
(B) Monocyte
(C) Lymphocyte
(D) Eosinophil
Answer: (C)
556. Leguminous plants enrich soil fertility by—
(A) Photosynthesis
(B) Rhizobium symbiosis
(C) Organic acid release
(D) Absorption of phosphate
Answer: (B)
557. Which vitamin is necessary for blood clotting?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin K
Answer: (D)
558. In mammals, fertilization occurs in—
(A) Ovary
(B) Uterus
(C) Fallopian tube
(D) Cervix
Answer: (C)
559. The longest cranial nerve is—
(A) Vagus nerve
(B) Trigeminal nerve
(C) Facial nerve
(D) Optic nerve
Answer: (A)
560. Which plant hormone is known as “stress hormone”?
(A) Gibberellin
(B) Cytokinin
(C) Abscisic acid
(D) Auxin
Answer: (C)
561. The enzyme that digests proteins in the stomach is—
(A) Amylase
(B) Pepsin
(C) Lipase
(D) Maltase
Answer: (B)
562. The outermost layer of an angiosperm root is—
(A) Endodermis
(B) Cortex
(C) Epidermis
(D) Pericycle
Answer: (C)
563. The process of red blood cell formation is called—
(A) Erythrolysis
(B) Erythropoiesis
(C) Leucopoiesis
(D) Thrombopoiesis
Answer: (B)
564. Which plant is used in producing quinine?
(A) Cinchona
(B) Papaver
(C) Digitalis
(D) Rauwolfia
Answer: (A)
565. The first cervical vertebra is—
(A) Atlas
(B) Axis
(C) Sacrum
(D) Coccyx
Answer: (A)
566. The seed coat develops from—
(A) Endosperm
(B) Nucellus
(C) Integuments
(D) Embryo
Answer: (C)
567. Which organ produces erythropoietin hormone?
(A) Liver
(B) Kidney
(C) Pancreas
(D) Stomach
Answer: (B)
568. The edible part of apple is—
(A) Ovary
(B) Thalamus
(C) Endosperm
(D) Cotyledons
Answer: (B)
569. The largest endocrine gland in human body is—
(A) Pituitary
(B) Thyroid
(C) Adrenal
(D) Pancreas
Answer: (B)
570. Which plant tissue provides mechanical support?
(A) Parenchyma
(B) Collenchyma
(C) Phloem
(D) Xylem
Answer: (B)
571. In which blood vessels valves are present?
(A) Arteries
(B) Veins
(C) Capillaries
(D) Arterioles
Answer: (B)
572. The most advanced gymnosperm is—
(A) Cycas
(B) Ginkgo
(C) Pinus
(D) Ephedra
Answer: (C)
573. Which part of human brain secretes ADH through posterior pituitary?
(A) Cerebrum
(B) Hypothalamus
(C) Thalamus
(D) Medulla
Answer: (B)
574. The edible part of potato is—
(A) Root
(B) Stem tuber
(C) Leaf
(D) Rhizoid
Answer: (B)
575. Which ion is essential for clotting of blood?
(A) Sodium
(B) Potassium
(C) Calcium
(D) Magnesium
Answer: (C)
576. The mode of nutrition in fungi is—
(A) Autotrophic
(B) Parasitic
(C) Heterotrophic by absorption
(D) Saprophytic only
Answer: (C)
577. Which is the largest gland in human body?
(A) Pancreas
(B) Liver
(C) Thyroid
(D) Adrenal
Answer: (B)
578. The secondary growth in plants is due to—
(A) Xylem
(B) Phloem
(C) Vascular cambium
(D) Epidermis
Answer: (C)
579. Which blood vessel carries pure blood from lungs to heart?
(A) Pulmonary vein
(B) Pulmonary artery
(C) Aorta
(D) Vena cava
Answer: (A)
580. The term “double circulation” refers to—
(A) Heart and lungs
(B) Systemic and pulmonary circulation
(C) Two atria and two ventricles
(D) Arteries and veins
Answer: (B)
581. C3 cycle was discovered by—
(A) Calvin
(B) Hatch and Slack
(C) Blackman
(D) Ruben
Answer: (A)
582. Which part of nephron is mainly responsible for reabsorption?
(A) Collecting duct
(B) Glomerulus
(C) Loop of Henle
(D) Proximal tubule
Answer: (D)
583. The edible part of coconut is—
(A) Seed coat
(B) Endosperm
(C) Embryo
(D) Cotyledons
Answer: (B)
584. Which muscle is involuntary and striated?
(A) Skeletal
(B) Smooth
(C) Cardiac
(D) None
Answer: (C)
585. The first stable product in C4 cycle is—
(A) PGA
(B) Malic acid
(C) Pyruvic acid
(D) Citric acid
Answer: (B)
586. Which type of symmetry is found in starfish?
(A) Bilateral
(B) Radial
(C) Asymmetry
(D) Spherical
Answer: (B)
587. Which plant hormone promotes cell division?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) ABA
Answer: (C)
588. Which blood protein helps in blood clotting?
(A) Albumin
(B) Globulin
(C) Fibrinogen
(D) Hemoglobin
Answer: (C)
589. The casparian strip is present in—
(A) Cortex
(B) Endodermis
(C) Pericycle
(D) Epidermis
Answer: (B)
590. The number of chromosomes in human gametes is—
(A) 23
(B) 46
(C) 44
(D) 22
Answer: (A)
591. Which plant part is modified into tendril in pea?
(A) Leaf
(B) Stem
(C) Root
(D) Stipule
Answer: (A)
592. The pacemaker of human heart is—
(A) SA node
(B) AV node
(C) Bundle of His
(D) Purkinje fibers
Answer: (A)
593. The edible part of wheat grain is—
(A) Seed coat
(B) Endosperm
(C) Pericarp
(D) Aleurone layer
Answer: (B)
594. Which hormone controls basal metabolic rate?
(A) Insulin
(B) Thyroxine
(C) Cortisol
(D) Estrogen
Answer: (B)
595. The largest flower in the world is—
(A) Rafflesia
(B) Amorphophallus
(C) Nelumbo
(D) Victoria regia
Answer: (A)
596. Which pigment absorbs maximum light during photosynthesis?
(A) Chlorophyll a
(B) Chlorophyll b
(C) Carotenoids
(D) Xanthophyll
Answer: (A)
597. Which blood cells are called “soldiers of the body”?
(A) Platelets
(B) RBC
(C) WBC
(D) Plasma
Answer: (C)
598. In Bryophytes, the dominant phase is—
(A) Sporophyte
(B) Gametophyte
(C) Both equal
(D) Haploid + Diploid
Answer: (B)
599. The enzyme lipase acts on—
(A) Proteins
(B) Fats
(C) Carbohydrates
(D) Nucleic acids
Answer: (B)
600. Which type of pollination occurs in maize?
(A) Self-pollination
(B) Cross-pollination by wind
(C) Insect pollination
(D) Self + Cross
Answer: (B)
601. Which vitamin deficiency causes scurvy?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin K
Answer: (B)
602. Root hairs originate from—
(A) Cortex
(B) Epidermis
(C) Endodermis
(D) Pericycle
Answer: (B)
603. Which is the functional unit of the kidney?
(A) Nephron
(B) Neuron
(C) Glomerulus
(D) Loop of Henle
Answer: (A)
604. The exoskeleton of arthropods is made up of—
(A) Cellulose
(B) Chitin
(C) Keratin
(D) Pectin
Answer: (B)
605. CAM photosynthesis is commonly found in—
(A) Rice
(B) Cactus
(C) Wheat
(D) Mango
Answer: (B)
606. Which blood cells release histamine during allergy?
(A) Basophils
(B) Neutrophils
(C) Monocytes
(D) Eosinophils
Answer: (A)
607. The female gametophyte of angiosperms is—
(A) Ovary
(B) Embryo sac
(C) Ovule
(D) Endosperm
Answer: (B)
608. The longest bone in the human body is—
(A) Humerus
(B) Tibia
(C) Femur
(D) Radius
Answer: (C)
609. Which plant hormone causes stem elongation?
(A) Cytokinin
(B) Auxin
(C) Gibberellin
(D) ABA
Answer: (C)
610. Which blood cells have no nucleus?
(A) RBCs in mammals
(B) Platelets
(C) WBCs
(D) Lymphocytes
Answer: (A)
611. The mode of nutrition in sponges is—
(A) Holozoic
(B) Saprophytic
(C) Parasitic
(D) Autotrophic
Answer: (A)
612. Which part of chloroplast contains the photosynthetic pigments?
(A) Stroma
(B) Grana
(C) Envelope
(D) Matrix
Answer: (B)
613. Which organ stores bile?
(A) Liver
(B) Pancreas
(C) Gall bladder
(D) Duodenum
Answer: (C)
614. Which vascular tissue transports food in plants?
(A) Xylem
(B) Phloem
(C) Cambium
(D) Collenchyma
Answer: (B)
615. Which protein is responsible for oxygen transport in humans?
(A) Hemocyanin
(B) Hemoglobin
(C) Myoglobin
(D) Globulin
Answer: (B)
616. The perisperm of seed is derived from—
(A) Endosperm
(B) Nucellus
(C) Integuments
(D) Embryo
Answer: (B)
617. Which vitamin is known as “sunshine vitamin”?
(A) Vitamin A
(B) Vitamin D
(C) Vitamin K
(D) Vitamin E
Answer: (B)
618. Which animal shows metameric segmentation?
(A) Earthworm
(B) Cockroach
(C) Octopus
(D) Starfish
Answer: (A)
619. The edible part of banana is—
(A) Pericarp
(B) Endosperm
(C) Seed
(D) Parthenocarpic fruit
Answer: (D)
620. Which blood vessels carry oxygenated blood from lungs to heart?
(A) Pulmonary vein
(B) Pulmonary artery
(C) Aorta
(D) Vena cava
Answer: (A)
621. Which part of the brain controls balance and posture?
(A) Cerebrum
(B) Cerebellum
(C) Hypothalamus
(D) Medulla
Answer: (B)
622. Which tissue makes up the bulk of wood?
(A) Phloem
(B) Xylem
(C) Cambium
(D) Cork
Answer: (B)
623. Which chamber of human heart pumps blood to lungs?
(A) Left atrium
(B) Right ventricle
(C) Left ventricle
(D) Right atrium
Answer: (B)
624. Which is the largest ovule-bearing structure in Pinus?
(A) Cone
(B) Megasporangium
(C) Microsporangium
(D) Strobilus
Answer: (A)
625. Which vitamin deficiency causes rickets?
(A) Vitamin A
(B) Vitamin B12
(C) Vitamin C
(D) Vitamin D
Answer: (D)
626. The functional unit of nervous system is—
(A) Nephron
(B) Neuron
(C) Axon
(D) Dendrite
Answer: (B)
627. The transpiration mainly occurs through—
(A) Root hairs
(B) Stomata
(C) Cuticle
(D) Lenticels
Answer: (B)
628. Which cells are called phagocytes?
(A) Lymphocytes
(B) Monocytes and Neutrophils
(C) Basophils
(D) Erythrocytes
Answer: (B)
629. The endosperm of angiosperms is—
(A) Diploid
(B) Haploid
(C) Triploid
(D) Tetraploid
Answer: (C)
630. The connective tissue which stores fat is—
(A) Cartilage
(B) Bone
(C) Adipose tissue
(D) Areolar tissue
Answer: (C)
631. Which plant is known as “living fossil”?
(A) Cycas
(B) Pinus
(C) Ginkgo
(D) Ephedra
Answer: (C)
632. Which blood cells play a major role in immunity?
(A) RBC
(B) WBC
(C) Platelets
(D) Plasma cells
Answer: (B)
633. Which type of fruit is mango?
(A) Drupe
(B) Berry
(C) Capsule
(D) Legume
Answer: (A)
634. The hormone insulin is secreted by—
(A) Alpha cells of pancreas
(B) Beta cells of pancreas
(C) Delta cells of pancreas
(D) Liver
Answer: (B)
635. The green algae belong to—
(A) Phaeophyceae
(B) Chlorophyceae
(C) Rhodophyceae
(D) Cyanophyceae
Answer: (B)
636. The smallest bone in human body is—
(A) Stapes
(B) Incus
(C) Malleus
(D) Hyoid
Answer: (A)
637. The sieve tube elements are found in—
(A) Xylem
(B) Phloem
(C) Cambium
(D) Collenchyma
Answer: (B)
638. Which pigment is responsible for oxygen transport in cockroach?
(A) Hemoglobin
(B) Hemocyanin
(C) Haemocyanin absent, O2 diffuses directly
(D) Hemerythrin
Answer: (C)
639. The main photosynthetic tissue in plants is—
(A) Xylem
(B) Phloem
(C) Mesophyll
(D) Collenchyma
Answer: (C)
640. Which organ produces bile?
(A) Pancreas
(B) Liver
(C) Gall bladder
(D) Stomach
Answer: (B)
641. The male reproductive organ of a flower is—
(A) Carpel
(B) Ovary
(C) Stamen
(D) Pistil
Answer: (C)
642. Which enzyme breaks down starch into maltose?
(A) Amylase
(B) Lipase
(C) Pepsin
(D) Trypsin
Answer: (A)
643. Which plant group is known as amphibians of plant kingdom?
(A) Algae
(B) Bryophytes
(C) Pteridophytes
(D) Gymnosperms
Answer: (B)
644. The diaphragm is involved in—
(A) Circulation
(B) Respiration
(C) Digestion
(D) Excretion
Answer: (B)
645. In maize, the type of seed is—
(A) Dicot
(B) Monocot
(C) Gymnospermous
(D) None
Answer: (B)
646. The smallest functional unit of muscle is—
(A) Myosin
(B) Sarcomere
(C) Actin
(D) Myofibril
Answer: (B)
647. Which is the female sex hormone?
(A) Testosterone
(B) Estrogen
(C) Progesterone
(D) Both (B) and (C)
Answer: (D)
648. The conducting tissue in bryophytes is—
(A) Absent
(B) Xylem only
(C) Phloem only
(D) Both xylem and phloem
Answer: (A)
649. The universal recipient blood group is—
(A) O
(B) AB
(C) A
(D) B
Answer: (B)
650. The longest part of the alimentary canal in humans is—
(A) Oesophagus
(B) Stomach
(C) Small intestine
(D) Large intestine
Answer: (C)
651. Which organelle is known as the “powerhouse of the cell”?
(A) Ribosome
(B) Golgi body
(C) Mitochondria
(D) Lysosome
Answer: (C)
652. The common mode of reproduction in Hydra is—
(A) Sexual
(B) Budding
(C) Binary fission
(D) Fragmentation
Answer: (B)
653. Double fertilization is a unique feature of—
(A) Gymnosperms
(B) Angiosperms
(C) Bryophytes
(D) Pteridophytes
Answer: (B)
654. Which protein helps in muscle contraction?
(A) Tubulin
(B) Actin and Myosin
(C) Elastin
(D) Keratin
Answer: (B)
655. The red color of ripe tomato is due to—
(A) Carotene
(B) Lycopene
(C) Xanthophyll
(D) Chlorophyll
Answer: (B)
656. In humans, which gland regulates metabolism?
(A) Adrenal gland
(B) Thyroid gland
(C) Pituitary gland
(D) Pancreas
Answer: (B)
657. The main photosynthetic pigment is—
(A) Chlorophyll a
(B) Chlorophyll b
(C) Carotene
(D) Xanthophyll
Answer: (A)
658. Which animals have flame cells for excretion?
(A) Platyhelminthes
(B) Annelids
(C) Arthropods
(D) Molluscs
Answer: (A)
659. The process of formation of pollen grains from microspore mother cells is called—
(A) Microsporogenesis
(B) Megasporogenesis
(C) Gametogenesis
(D) Fertilization
Answer: (A)
660. Which vitamin is essential for blood clotting?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin K
(D) Vitamin E
Answer: (C)
661. Which phylum does starfish belong to?
(A) Mollusca
(B) Arthropoda
(C) Echinodermata
(D) Annelida
Answer: (C)
662. Casparian strips are present in—
(A) Cortex
(B) Pericycle
(C) Endodermis
(D) Phloem
Answer: (C)
663. The functional unit of lungs is—
(A) Bronchioles
(B) Alveoli
(C) Bronchi
(D) Trachea
Answer: (B)
664. The main component of plant cell wall is—
(A) Pectin
(B) Cellulose
(C) Chitin
(D) Lignin
Answer: (B)
665. Which part of nephron collects urine?
(A) Glomerulus
(B) Loop of Henle
(C) Collecting duct
(D) Bowman’s capsule
Answer: (C)
666. Sieve plates are found in—
(A) Xylem vessels
(B) Sieve tube elements
(C) Tracheids
(D) Cambium
Answer: (B)
667. Which organ produces urea?
(A) Kidney
(B) Liver
(C) Lungs
(D) Pancreas
Answer: (B)
668. The stele in monocot root is—
(A) Triarch
(B) Pentarch
(C) Polyarch
(D) Diarch
Answer: (C)
669. Which joint is present in the human skull?
(A) Ball and socket
(B) Hinge joint
(C) Fixed joint
(D) Pivot joint
Answer: (C)
670. In C4 plants, the first stable product of carbon fixation is—
(A) 3-PGA
(B) OAA
(C) RuBP
(D) Pyruvate
Answer: (B)
671. The hormone secreted by adrenal medulla is—
(A) Cortisol
(B) Aldosterone
(C) Adrenaline
(D) Thyroxine
Answer: (C)
672. In angiosperms, integuments of ovule develop into—
(A) Endosperm
(B) Seed coat
(C) Perisperm
(D) Testa and tegmen
Answer: (D)
673. Which organ regulates body temperature in mammals?
(A) Medulla
(B) Cerebellum
(C) Hypothalamus
(D) Thalamus
Answer: (C)
674. The leaf of Pinus is—
(A) Needle-like
(B) Broad
(C) Compound
(D) Simple with reticulate venation
Answer: (A)
675. Which blood group is called the universal donor?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)
676. Which vascular bundle is found in dicot stem?
(A) Closed collateral
(B) Open collateral
(C) Conjoint closed
(D) Radial
Answer: (B)
677. Which protein is found in hair and nails?
(A) Collagen
(B) Keratin
(C) Elastin
(D) Fibrin
Answer: (B)
678. In legumes, nitrogen fixation is carried out by—
(A) Azotobacter
(B) Rhizobium
(C) Clostridium
(D) Nitrosomonas
Answer: (B)
679. Which valve is present between left atrium and left ventricle?
(A) Tricuspid valve
(B) Bicuspid/Mitral valve
(C) Pulmonary valve
(D) Aortic valve
Answer: (B)
680. The mode of nutrition in fungi is—
(A) Autotrophic
(B) Heterotrophic
(C) Chemosynthetic
(D) Mixotrophic
Answer: (B)
681. Which muscle is involuntary?
(A) Skeletal
(B) Smooth
(C) Biceps
(D) Triceps
Answer: (B)
682. The floral formula of pea belongs to family—
(A) Solanaceae
(B) Fabaceae
(C) Asteraceae
(D) Brassicaceae
Answer: (B)
683. The longest part of the human brain is—
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Pons
Answer: (A)
684. Which plant hormone promotes fruit ripening?
(A) Ethylene
(B) Auxin
(C) ABA
(D) Cytokinin
Answer: (A)
685. Which is the largest gland in the human body?
(A) Pancreas
(B) Thyroid
(C) Liver
(D) Pituitary
Answer: (C)
686. In moss, the dominant generation is—
(A) Sporophyte
(B) Gametophyte
(C) Protonema
(D) Embryo
Answer: (B)
687. Which chamber of human heart pumps blood into systemic circulation?
(A) Right atrium
(B) Left atrium
(C) Right ventricle
(D) Left ventricle
Answer: (D)
688. The reserve food in red algae is—
(A) Starch
(B) Floridean starch
(C) Glycogen
(D) Mannitol
Answer: (B)
689. Which organelle contains hydrolytic enzymes?
(A) Lysosome
(B) Peroxisome
(C) Ribosome
(D) Nucleus
Answer: (A)
690. Which pigment gives brown color to Phaeophyceae?
(A) Phycocyanin
(B) Fucoxanthin
(C) Phycoerythrin
(D) Xanthophyll
Answer: (B)
691. Which is the structural and functional unit of life?
(A) Tissue
(B) Cell
(C) Organ
(D) Organ system
Answer: (B)
692. The tube carrying urine from kidney to urinary bladder is—
(A) Urethra
(B) Ureter
(C) Nephron
(D) Loop of Henle
Answer: (B)
693. Lenticels are involved in—
(A) Photosynthesis
(B) Gaseous exchange
(C) Transpiration
(D) Absorption
Answer: (B)
694. The cardiac pacemaker is located in—
(A) AV node
(B) SA node
(C) Bundle of His
(D) Purkinje fibres
Answer: (B)
695. The edible part of apple is—
(A) Endosperm
(B) Mesocarp
(C) Thalamus
(D) Pericarp
Answer: (C)
696. Which blood cells are called “soldiers of the body”?
(A) RBC
(B) Platelets
(C) WBC
(D) Plasma
Answer: (C)
697. The reserved food material in seeds of castor is—
(A) Carbohydrate
(B) Protein
(C) Fat
(D) Oil
Answer: (D)
698. Which part of the brain regulates pituitary gland secretion?
(A) Cerebrum
(B) Hypothalamus
(C) Cerebellum
(D) Medulla
Answer: (B)
699. In dicot root, lateral roots originate from—
(A) Endodermis
(B) Pericycle
(C) Cortex
(D) Epidermis
Answer: (B)
700. The average life span of human RBC is—
(A) 60 days
(B) 90 days
(C) 120 days
(D) 150 days
Answer: (C)
701. The smallest unit of genetic material is—
(A) Chromosome
(B) Gene
(C) DNA
(D) Nucleotide
Answer: (D)
702. Which plant is known as “living fossil”?
(A) Ginkgo biloba
(B) Cycas
(C) Pinus
(D) Sequoia
Answer: (A)
703. Which cells in pancreas secrete insulin?
(A) Alpha cells
(B) Beta cells
(C) Delta cells
(D) Gamma cells
Answer: (B)
704. Root hair develops from—
(A) Epidermis
(B) Cortex
(C) Endodermis
(D) Pericycle
Answer: (A)
705. The universal recipient blood group is—
(A) A
(B) B
(C) AB
(D) O
Answer: (C)
706. Which animal has nephridia as excretory organ?
(A) Earthworm
(B) Cockroach
(C) Hydra
(D) Snail
Answer: (A)
707. Which vitamin deficiency causes night blindness?
(A) Vitamin A
(B) Vitamin B1
(C) Vitamin C
(D) Vitamin K
Answer: (A)
708. Which plant tissue is dead at maturity?
(A) Phloem
(B) Xylem
(C) Collenchyma
(D) Parenchyma
Answer: (B)
709. The main organ for excretion in humans is—
(A) Liver
(B) Kidney
(C) Lung
(D) Skin
Answer: (B)
710. Which algae is used as food in Japan?
(A) Sargassum
(B) Laminaria
(C) Porphyra
(D) Ulva
Answer: (C)
711. Which bone is called “breast bone”?
(A) Clavicle
(B) Sternum
(C) Scapula
(D) Vertebra
Answer: (B)
712. In dicot leaf, stomata are generally—
(A) Anisocytic
(B) Paracytic
(C) Diacytic
(D) All of these
Answer: (D)
713. Which pigment is present in red blood cells?
(A) Myoglobin
(B) Hemoglobin
(C) Chlorophyll
(D) Bilirubin
Answer: (B)
714. The perisperm of seed is derived from—
(A) Integuments
(B) Nucellus
(C) Endosperm
(D) Embryo
Answer: (B)
715. Which blood vessel carries deoxygenated blood from heart to lungs?
(A) Aorta
(B) Pulmonary vein
(C) Pulmonary artery
(D) Vena cava
Answer: (C)
716. The edible part of coconut is—
(A) Endosperm
(B) Pericarp
(C) Cotyledon
(D) Endocarp
Answer: (A)
717. The largest bone in human body is—
(A) Tibia
(B) Femur
(C) Fibula
(D) Humerus
Answer: (B)
718. Which gymnosperm is known as “sago palm”?
(A) Cycas
(B) Ginkgo
(C) Pinus
(D) Ephedra
Answer: (A)
719. The process of expelling undigested food through anus is—
(A) Assimilation
(B) Defecation
(C) Egestion
(D) Absorption
Answer: (C)
720. The leaf arrangement in sunflower is—
(A) Opposite
(B) Alternate
(C) Whorled
(D) Spiral
Answer: (B)
721. Which chamber of human heart receives oxygenated blood from lungs?
(A) Right atrium
(B) Left atrium
(C) Right ventricle
(D) Left ventricle
Answer: (B)
722. DNA replication is—
(A) Conservative
(B) Semiconservative
(C) Dispersive
(D) Random
Answer: (B)
723. Which is the male reproductive organ in flower?
(A) Carpel
(B) Stamen
(C) Ovary
(D) Style
Answer: (B)
724. Which joint is a pivot joint in humans?
(A) Shoulder joint
(B) Neck joint (atlas and axis)
(C) Knee joint
(D) Wrist joint
Answer: (B)
725. CAM photosynthesis is common in—
(A) Cactus
(B) Wheat
(C) Rice
(D) Maize
Answer: (A)
726. Which animal is diploblastic?
(A) Hydra
(B) Earthworm
(C) Cockroach
(D) Snail
Answer: (A)
727. The main nitrogenous waste in mammals is—
(A) Ammonia
(B) Uric acid
(C) Urea
(D) Creatinine
Answer: (C)
728. The secondary growth in dicot stem is due to—
(A) Apical meristem
(B) Intercalary meristem
(C) Vascular cambium and cork cambium
(D) Root cap
Answer: (C)
729. Which artery supplies blood to heart muscles?
(A) Coronary artery
(B) Carotid artery
(C) Pulmonary artery
(D) Aorta
Answer: (A)
730. Which is the female gametophyte in angiosperms?
(A) Embryo sac
(B) Ovule
(C) Egg
(D) Archegonium
Answer: (A)
731. The longest cell in human body is—
(A) Muscle cell
(B) Neuron
(C) Epithelial cell
(D) RBC
Answer: (B)
732. In maize, endosperm is—
(A) Haploid
(B) Diploid
(C) Triploid
(D) Tetraploid
Answer: (C)
733. Which vitamin deficiency causes scurvy?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin K
Answer: (C)
734. Mycorrhiza is association between—
(A) Algae and fungi
(B) Root and fungi
(C) Root and bacteria
(D) Algae and bacteria
Answer: (B)
735. The functional unit of nervous system is—
(A) Brain
(B) Neuron
(C) Axon
(D) Nerve
Answer: (B)
736. The inflorescence of wheat is—
(A) Raceme
(B) Spike
(C) Panicle
(D) Cyathium
Answer: (B)
737. Which protein transports oxygen in blood?
(A) Myoglobin
(B) Hemoglobin
(C) Globulin
(D) Albumin
Answer: (B)
738. The floral formula ⊕ ⚥ K(5) C(5) A(5) G(2) belongs to—
(A) Fabaceae
(B) Solanaceae
(C) Liliaceae
(D) Asteraceae
Answer: (B)
739. Which valve is located at the exit of left ventricle?
(A) Pulmonary valve
(B) Aortic valve
(C) Mitral valve
(D) Tricuspid valve
Answer: (B)
740. Which cell organelle is known as “suicidal bag”?
(A) Ribosome
(B) Lysosome
(C) Peroxisome
(D) Plastid
Answer: (B)
741. The edible part of groundnut is—
(A) Cotyledons
(B) Endosperm
(C) Embryo sac
(D) Pericarp
Answer: (A)
742. Which gland is called “master gland”?
(A) Thyroid
(B) Pituitary
(C) Adrenal
(D) Pancreas
Answer: (B)
743. The plants which complete life cycle in one season are—
(A) Biennials
(B) Annuals
(C) Perennials
(D) Ephemerals
Answer: (B)
744. Which blood cells help in blood clotting?
(A) RBC
(B) WBC
(C) Platelets
(D) Plasma cells
Answer: (C)
745. The edible part of banana is—
(A) Mesocarp
(B) Pericarp
(C) Endocarp
(D) Seed
Answer: (B)
746. Which part of brain controls voluntary movements?
(A) Cerebrum
(B) Cerebellum
(C) Medulla
(D) Hypothalamus
Answer: (A)
747. The movement of water from root hair to xylem is—
(A) Apoplast and symplast pathway
(B) Osmosis only
(C) Diffusion only
(D) Transpiration
Answer: (A)
748. Which organ is called “blood bank of human body”?
(A) Kidney
(B) Spleen
(C) Liver
(D) Heart
Answer: (B)
749. The fruit of mango is—
(A) Drupe
(B) Berry
(C) Capsule
(D) Nut
Answer: (A)
750. Which vitamin is synthesized in human skin on exposure to sunlight?
(A) Vitamin A
(B) Vitamin D
(C) Vitamin E
(D) Vitamin K
Answer: (B)
751. The power house of the cell is—
(A) Ribosome
(B) Lysosome
(C) Mitochondria
(D) Nucleus
Answer: (C)
752. The plant hormone responsible for cell elongation is—
(A) Cytokinin
(B) Auxin
(C) Gibberellin
(D) Abscisic acid
Answer: (B)
753. Which part of nephron is responsible for filtration of blood?
(A) Loop of Henle
(B) Bowman’s capsule
(C) Collecting duct
(D) Proximal tubule
Answer: (B)
754. Which algae is known as “pond scum”?
(A) Spirogyra
(B) Ulothrix
(C) Chlamydomonas
(D) Volvox
Answer: (A)
755. The human ear ossicles are—
(A) Malleus, incus, stapes
(B) Radius, ulna, humerus
(C) Tibia, fibula, femur
(D) Scapula, clavicle, sternum
Answer: (A)
756. Which is the male gametophyte of angiosperms?
(A) Pollen grain
(B) Microspore mother cell
(C) Anther
(D) Ovule
Answer: (A)
757. Which blood vessel carries oxygenated blood from lungs to heart?
(A) Aorta
(B) Pulmonary vein
(C) Pulmonary artery
(D) Vena cava
Answer: (B)
758. The largest phylum in animal kingdom is—
(A) Chordata
(B) Arthropoda
(C) Mollusca
(D) Annelida
Answer: (B)
759. In C4 plants, initial CO₂ fixation occurs in—
(A) Mesophyll cells
(B) Bundle sheath cells
(C) Guard cells
(D) Epidermis
Answer: (A)
760. Which part of brain controls respiration and heartbeat?
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Pons
Answer: (C)
761. The inflorescence of banana is—
(A) Spadix
(B) Panicle
(C) Umbel
(D) Catkin
Answer: (A)
762. Which blood group is universal donor?
(A) A
(B) B
(C) O
(D) AB
Answer: (C)
763. In Hydra, digestion is—
(A) Extracellular only
(B) Intracellular only
(C) Both extracellular and intracellular
(D) Symbiotic
Answer: (C)
764. The main function of xylem is—
(A) Transport of food
(B) Transport of water
(C) Photosynthesis
(D) Storage
Answer: (B)
765. The smallest bone in human body is—
(A) Stapes
(B) Malleus
(C) Incus
(D) Hyoid
Answer: (A)
766. The edible part of onion is—
(A) Stem
(B) Root
(C) Fleshy leaves
(D) Flower bud
Answer: (C)
767. The human heart is—
(A) Two chambered
(B) Three chambered
(C) Four chambered
(D) Five chambered
Answer: (C)
768. Bryophytes are called—
(A) Amphibians of plant kingdom
(B) Algae-like plants
(C) Seedless plants
(D) Terrestrial algae
Answer: (A)
769. Which is the structural and functional unit of kidney?
(A) Neuron
(B) Nephron
(C) Alveolus
(D) Bowman’s capsule
Answer: (B)
770. In which plant would Kranz anatomy be found?
(A) Wheat
(B) Rice
(C) Maize
(D) Mango
Answer: (C)
771. The liquid part of blood is—
(A) Plasma
(B) Serum
(C) Lymph
(D) Platelets
Answer: (A)
772. Which fungi is used in bread making?
(A) Rhizopus
(B) Saccharomyces
(C) Agaricus
(D) Penicillium
Answer: (B)
773. The longest part of human alimentary canal is—
(A) Stomach
(B) Large intestine
(C) Small intestine
(D) Esophagus
Answer: (C)
774. Which is the main photosynthetic tissue in leaf?
(A) Epidermis
(B) Mesophyll
(C) Xylem
(D) Phloem
Answer: (B)
775. Which blood cells are called “soldiers of the body”?
(A) RBC
(B) WBC
(C) Platelets
(D) Plasma
Answer: (B)
776. Which is the largest living bird?
(A) Ostrich
(B) Emu
(C) Kiwi
(D) Albatross
Answer: (A)
777. The functional unit of skeletal muscle is—
(A) Sarcomere
(B) Myofibril
(C) Fiber
(D) Fascicle
Answer: (A)
778. The edible part of apple is—
(A) Pericarp
(B) Thalamus
(C) Cotyledon
(D) Endosperm
Answer: (B)
779. Which vitamin helps in clotting of blood?
(A) Vitamin A
(B) Vitamin D
(C) Vitamin E
(D) Vitamin K
Answer: (D)
780. Which animal phylum shows water vascular system?
(A) Echinodermata
(B) Annelida
(C) Arthropoda
(D) Mollusca
Answer: (A)
781. Which pigment absorbs maximum light in photosynthesis?
(A) Chlorophyll a
(B) Chlorophyll b
(C) Xanthophyll
(D) Carotene
Answer: (A)
782. The valve present between right atrium and right ventricle is—
(A) Bicuspid valve
(B) Aortic valve
(C) Tricuspid valve
(D) Pulmonary valve
Answer: (C)
783. Bacteria which convert atmospheric nitrogen into ammonium compounds are—
(A) Nitrosomonas
(B) Nitrobacter
(C) Rhizobium
(D) Azotobacter
Answer: (C)
784. The connective tissue which stores fat is—
(A) Cartilage
(B) Bone
(C) Adipose tissue
(D) Areolar tissue
Answer: (C)
785. Which plant group is called “amphibians of plant kingdom”?
(A) Algae
(B) Bryophytes
(C) Pteridophytes
(D) Gymnosperms
Answer: (B)
786. In mammals, fertilization occurs in—
(A) Uterus
(B) Fallopian tube
(C) Vagina
(D) Ovary
Answer: (B)
787. Which is the main photosynthetic product transported in phloem?
(A) Glucose
(B) Sucrose
(C) Starch
(D) Maltose
Answer: (B)
788. Which blood cells lack a nucleus?
(A) WBC
(B) RBC
(C) Platelets
(D) Plasma cells
Answer: (B)
789. Which hormone regulates calcium level in blood?
(A) Insulin
(B) Thyroxine
(C) Parathyroid hormone
(D) Adrenaline
Answer: (C)
790. The edible part of potato is—
(A) Root
(B) Stem tuber
(C) Leaf
(D) Hypocotyl
Answer: (B)
791. Which vitamin deficiency causes rickets?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin D
(D) Vitamin K
Answer: (C)
792. The exoskeleton of arthropods is made of—
(A) Cellulose
(B) Chitin
(C) Keratin
(D) Collagen
Answer: (B)
793. The pigment responsible for green color of plants is—
(A) Xanthophyll
(B) Carotene
(C) Chlorophyll
(D) Anthocyanin
Answer: (C)
794. Which organ in human body stores bile?
(A) Pancreas
(B) Liver
(C) Gall bladder
(D) Small intestine
Answer: (C)
795. The edible part of pea seed is—
(A) Cotyledons
(B) Endosperm
(C) Pericarp
(D) Plumule
Answer: (A)
796. Which blood cells secrete antibodies?
(A) Monocytes
(B) Neutrophils
(C) Lymphocytes (B-cells)
(D) Platelets
Answer: (C)
797. Which plants are called vascular cryptogams?
(A) Algae
(B) Bryophytes
(C) Pteridophytes
(D) Gymnosperms
Answer: (C)
798. Which structure in human body produces sound?
(A) Larynx
(B) Trachea
(C) Pharynx
(D) Epiglottis
Answer: (A)
799. The reserve food material in algae is—
(A) Starch
(B) Floridean starch
(C) Laminarin
(D) All of these depending on group
Answer: (D)
800. The organ of Corti is concerned with—
(A) Vision
(B) Smell
(C) Hearing
(D) Balance
Answer: (C)
