Biology MCQs

31. What is the unit of the Nervous system?
[A] Brain
[B] Spinal Cord
[C] Neuron
[D] Nerves

Show Answer

32. How many of the following senses are there?
[A] Four
[B] Five
[C] Six
[D] None of these

Show Answer

33. What are the types of cells found in the retina?
[A] Purkinje cells
[B] Schwann cells
[C] Neuroglial cells
[D] Amacrine cells

Show Answer

34. Serum differs from blood because it lacks__
[A] antibodies
[B] clotting factors
[C] albumins
[D] globulins

Show Answer

35. The ovary is surrounded by a thin covering of ___.
[A] epithelium
[B] ampulla
[C] isthmus
[D] infundibulum

Show Answer

36. What is the main cause of gout in the human body?
[A] too much uric acid in the body
[B] too much lactic acid in the body
[C] too much vitamins in the body
[D] too much iron in the body

Show Answer

37. Where are the genes for cytoplasmic male sterility in plants located?
[A] Chloroplast genome
[B] Mitochondrial genome
[C] Cytosome
[D] None of these

Show Answer

38. What is the nitrogen-fixing symbiotic organism present in Azolla?
[A] nostoke
[B] anabaena
[C] aulosira
[D] azospirillum

Show Answer

39. Which of the following is the first GM crop in India?
[A] mustard
[B] brinjal
[C] potato
[D] None of these

Show Answer

40. What is Alzheimer’s disease?
[A] It affects liver
[B] It is a disorder of the brain
[C] It affects kidney
[D] It affects human immune system

Show Answer