Biology MCQs

31. Which of the following are armored fish?
[A] Chondrichthyes
[B] Osteichtliyes
[C] Placoderms
[D] Acanthodians

Show Answer

32. Which of the following is rat-fish?
[A] Salmons
[B] Lamprey
[C] Sharks
[D] Chimeras

Show Answer

33. The number of cervical vertebrae in reptiles is __
[A] 4
[B] 6
[C] 7
[D] 8

Show Answer

34. Which is a symptom of labyrinthitis?
[A] Pain in the ear
[B] Permanent deafness
[C] Chronic inflammation
[D] All of the above

Show Answer

35. Which is also known as the master gland of our body?
[A] Pineal gland
[B] Thyroid gland
[C] Adrenal gland
[D] Pituitary gland

Show Answer

36. A tube that allows urine to pass out of the body __
[A] penis
[B] urethra
[C] scrotum
[D] All of the above

Show Answer

37. Mendel used which of the following one for his experiments.
[A] Pisum sativum
[B] Pisum album
[C] Oryza sativa
[D] Oryza Orientalis

Show Answer

38. A cross between homozygous recessive and heterozygous plant is
____:
[A] Back cross
[B] Test cross
[C] Monohybrid cross
[D] Dihybrid cross

Show Answer

39. Which of the following increases the rate of heart beat?
[A] Peripheral nerves
[B] Parasympathetic nerves
[C] Sympathetic nerves
[D] Cranial nerves

Show Answer

40. Which part of the brain is responsible for triggering actions like thinking, intelligence, memory and ability to learn?
[A] Control
[B] Cerebrum
[C] Hypothalamus
[D] Diencephalon

Show Answer