physiology of plants, humans and animals - Category wise Question and Answer Practice Test with Solutions

Question : 21

Which of the following cells is responsible for myelin formation in the peripheral nervous system?

a) Schwann cell

b) Oligodendrocyte

c) Astrocyte

d) Microglial cell

Question : 22

Which one is not a reflex action?

a) Release of saliva on seeing sweets

b) Closing of eye lids against fricking

c) Perspiration due to heat

d) Obeying the order to run

Question : 23

Consider the following statements:

1. Flowering plants are grouped under phanerogams.
2. Non-flowering plants are grouped in cryptogams.

a) 1 and 2

b) 1 only

c) 2 only

d) None

Question : 24

Ethylene gas is used for

a) delaying fruit’s abscission.

b) ripening of fruits.

c) growth of plants.

d) stopping the leaf abscission.

Question : 25 [NDA]

Which one of the following is an enzyme?

a) Keratin

b) Gastrin

c) Trypsin

d) Vasopressin