Kangaroo and desert rat that live in conditions of water scarcity are capable of meeting all their water requirements by

Options

A. having a thick coat to minimise evaporative desiccation
B. oxidising stored fat to produce water as by product
C. producing very concentrated urine and solid faeces
D. all of these

Answer

D

Explanation

Kangaroo and desert rat seldom drink water. It has a thick coat to minimise evaporative desiccation. The animal seldom comes out of its comparatively humid and cool burrow during the day time. `90%` of its water requirement is met from metabolic water which is produced by respiratory breakdown of fats. `10%` is obtained from food. Loos of water is minimised by producing nearly solid urine and faeces.