Biology MCQs

31. Which hormone enhances milk release from the mammary glands?
[A] Adrenocorticotrophic Hormone
[B] Pressor
[C] Prolactin
[D] Both 1 and 2

Show Answer

32. What is the purpose of cranial nerves in the human body?
[A] carry information from the brain to all parts of the body
[B] facilitate the sense of vision and smell
[C] muscle movement
[D] All of the above

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. Why is corneal transplantation never rejected in humans?
[A] it consists of enucleated cells
[B] it is a non-living layer
[C] it has no blood supply
[D] its cells are least penetrable by bacteria

Show Answer

35. The muscular diaphragm that controls the size of the pupil is __
[A] cornea
[B] ciliary muscles
[C] iris
[D] retina

Show Answer

36. Which of the following is best maintains intestinal health?
[A] Starches
[B] Vitamins
[C] Fiber
[D] Fat

Show Answer

37. Heart disease and High blood pressure are examples of which genetic disorder?
[A] Chromosomal Disorder
[B] Mitochondrial Inheritance
[C] Multifactorial Genetic Inheritance
[D] None of these

Show Answer

38. Which of the following is a free-living aerobic and non-photosynthetic nitrogen-fixing bacterium?
[A] Rhizobium
[B] Nostoc
[C] Azospirillum
[D] Azotobacter

Show Answer

39. Which nematode infects the roots of tobacco plants?
[A] Meloidogyne incognitia
[B] Ditylenchus dipsaci
[C] Xiphinema index
[D] Nacobbus aberrans

Show Answer

40. Which of the following are examples of hydrophilic molecules?
[A] sugar
[B] cellulose
[C] starch
[D] All of the above

Show Answer