Biology MCQs

31. The opening of the infundibulum into the body cavity is called?
[A] isthmus
[B] ampulla
[C] ostium
[D] thalamus

Show Answer

32. What is Cystic Fibrosis?
[A] Sex-linked recessive disorder
[B] Autosomal dominant disorder
[C] Autosomal recessive disorder
[D] Sex-linked dominant disorder

Show Answer

33. Biofertilizers include which of the following?
[A] Nitrogen-fixing bacteria
[B] Nitrogen-fixing cyanobacteria
[C] Both bacteria and cyanobacteria
[D] Bacteria, cyanobacteria, and mycorrhizal fungi

Show Answer

34. Osteocytes are found in ____:
[A] Blood
[B] Bone
[C] Lymph
[D] Cartilage

Show Answer

35. Which of the following acids is synthesized in human stomach?
[A] Hydrochloric acid
[B] Sulphuric acid
[C] Nitric acid
[D] Phosphoric acid

Show Answer

36. Which of the following is an example of Ball and Socket joint in humans?
[A] Hip Joint
[B] Neck Joint
[C] Wrist Joint
[D] Finger Joint

Show Answer

37. Which of the following animals has the longest life span?
[A] Dog
[B] Elephant
[C] Crocodile
[D] Tortoise

Show Answer

38. Animals adapted to life in air are called ____:
[A] Fossorial
[B] Arboreal
[C] Cursorial
[D] Volant

Show Answer

39. Dormancy period of animals during winter season is called ____:
[A] Aestivation
[B] Mutation
[C] Hibernation
[D] Regeneration

Show Answer

40. Which of the following is a vestigial organ in human body?
[A] Spleen
[B] Tailbone
[C] Thyroid
[D] Gall bladder

Show Answer