Question

During extreme aridity,desert rat
(a)Stores water
(b)Uses metabolic water
(c)Saves water
(d)Do not use water

Answer 1

Hint: It is a variety of small rodents which is known as kangaroo rat,inhabiting arid regions.Kangaroo rats mostly eat seed mesquite beans and grass seeds. Sometimes it is seen eating small insects.

Complete answer:
-Uses metabolic water-Desert rats are commonly found in arid regions. Thus the animals and the plants which live in the deserts have certain adaptations which enable the organism to survive in the extreme climate. By the product of the metabolic reactions water is produced which is known as the metabolic water. Metabolic water is used by the kangaroo rat which is produced by the reactions in the body rather than the less amount of water which is available in the environment.
Hence, option b is correct.

Note: -Kangaroo rats or desert rats are dangerous to humans because they often carry fleas which are diseases and humans are more susceptible to it. Kangaroo rats are short lived animals, with a maximum life span of five years in captivity.