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

Question : 16

Chief function of leaves are

a) respiration and photosynthesis

b) respiration and digestion

c) transpiration and photosynthesis

d) respiration and transpiration

Question : 17

Photosynthetically active radiation is represented by the range of wavelength of

a) 400 – 700 nm

b) 500 – 600 nm

c) 340 – 450 nm

d) 400 – 950 nm

Question : 18

During strenuous exercise, glucose is converted into

a) pyruvic acid

b) glycogen

c) starch

d) lactic acid

Question : 19

Consider the following statements :

1. Aerenchyma tissue are found in hydrophytes.
2. Number of stomata is less and sunken in xerophyte.
3. Velamen tissue in orchids are found in root.

a) 2 only

b) 1, 2 and 3

c) 3 only

d) 1 only

Question : 20

Which of the following commonly called emergency gland of body?

a) Testis

b) Thymus

c) Adrenal

d) Pituitary