Friday, April 19, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

Biology Practice Sets for SSC, Rail, UPSC, WBCS Exam P7


Biology 07

31. _____, is an antivitamin.
(A) Pyrithiamine
(B) Folic acid
(C) Beta carotene
(D) Methyl cobalamine.

Correct Answer: [A] Pyrithiamine.
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32. The number of cervical vertebrae in a mammal is
(A) Seventy-seven
(B) Eleven
(C) Seven
(D) Seventeen.

Correct Answer: [C] Seven.
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33. Malaria parasite can best be obtained from the blood of its patient
(A) When the temperature rises with rigor
(B) Any time
(C) One hour before rising of temperature
(D) Five hours after the temperature.

Correct Answer: [A] When the temperature rises with rigor.
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34. The phytohormone responsible for senescence
(A) Gibberellin
(B) Ethylene
(C) Cytokinin
(D) Auxin.

Correct Answer: [B] Ethylene.
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35. Yellowing of plant leaves is called chlorosis, insufficiency of which one causes it?
(A) Calcium
(B) Magnesium
(C) Sodium
(D) Phosphorus.

Correct Answer: [B] Magnesium.
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