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

Question : 21

Which part of the alimentary canal does not secrete any enzyme?

a) Oesophagus

b) Mouth

c) Stomach

d) Duodenum

Question : 22

Which one of the following correctly represents the normal adult human dental formula ?

a) $2/2, 1/1, 3/2, 3/3$

b) $3/3, 1/1, 3/2, 1/1$

c) $2/2, 1/1, 2/2, 3/3$

d) $3/3, 1/1, 3/3, 3/3$

Question : 23

If a cell swells, after being placed in solution, the solution is

a) hypotonic

b) hypertonic

c) neutral

d) isotonic

Question : 24

Antibodies are

a) immunoglobulins

b) carbohydrates

c) globular proteins

d) extrinsic proteins

Question : 25

Stomata open and close due to

a) genetic clock

b) pressure of gases inside the leaves

c) circadian rhythm

d) turgor pressure of guard cells