Thursday, February 27, 2020

WBCS Polity and Constitution MCQs Prelims and Mains

general science mcq pdf For UPSC | SSC | Rail | RRB | State PSC P25


Biology 25

121. The ecological niche is the
(A) An abiotic component in an ecosystem.
(B) A biotic component in an ecosystem.
(C) Both A and B
(D) None of the above

Correct Answer: [B] A biotic component in an ecosystem..
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122. Which disease is caused by fungus?
(A) Dermatitis
(B) Cholera
(C) Polio
(D) Malaria

Correct Answer: [A] Dermatitis.
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123. Which one of the following plants keeps its stomata open during the night and closed during the day?
(A) Sunflower
(B) Fern
(C) Water Lily
(D) Cactus

Correct Answer: [D] Cactus.
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124. The following animal is called a friend of farmer :
(A) Rhizobium
(B) Honey-bee
(C) Goat
(D) Earthworm

Correct Answer: [D] Earthworm.
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125. The biochemical processes taking place in the body is known as
(A) Metabolism
(B) None of the above
(C) Anabolism
(D) Catabolism

Correct Answer: [A] Metabolism.
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