Biology MCQs

31. Sugar crops to produce __
[A] biomethane
[B] bioethanol
[C] biobutanol
[D] None of these

Show Answer

32. What is the ultimate product of Glycolysis?
[A] Pyruvic acid
[B] Carbon dioxide
[C] Glucose
[D] Ethyl alcohol

Show Answer

33. Grey hair is caused due to
____:
[A] Aging of epidermal cells
[B] Death of dermal cells
[C] Loss of sebum in epidermal cells
[D] Loss of melanin in epidermal cells

Show Answer

34. What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue?
[A] ATP
[B] Lactic acid
[C] Ethyl alcohol
[D] Carbon dioxide

Show Answer

35. The cells which are colsely associated and interacting with guard cells are ____:
[A] Transfusion tissue
[B] Complementary cells
[C] Subsidiary cells
[D] Hypodermal cells

Show Answer

36. The vector of disease sleeping sickness is ____:
[A] Sand fly
[B] House fly
[C] Fruit fly
[D] Tsetse fly

Show Answer

37. Which of the following are flowerless plants that produce cones and seeds in which seeds are not encased within an ovary?
[A] Hydrophytes
[B] Bryophytes
[C] Gymnosperms
[D] Angiosperms

Show Answer

38. The metal ion present in vitamin B12 is ____:
[A] Nickel
[B] Iron
[C] Cobalt
[D] Zinc

Show Answer

39. Animals in which the cells are arranged in three embryonic layers are called _____:
[A] Ectoderm
[B] Endoderm
[C] Tripoblastic
[D] Diploblastic

Show Answer

40. Plague is caused by ____:
[A] Virus
[B] Protozoa
[C] Bacteria
[D] All of the above

Show Answer