Which of the following is not adaptation in kangaroo rat to live in deserts?

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It has long nasal cavities that reduce water loss by cooling the air leaving the lungs.

It basks in the sun when its body temperature drops below the comfort zone.

It has long loops of Henle and excretes concentrated urine.

It meets its water requirements through its internal fat oxidation.

answer is B.

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Detailed Solution

Basking in the sun and absorption of heat when the body temperature drops is an adaptation in desert lizards (not kangaroo rat).

The kangaroo rat in North American deserts is capable of meeting all its water requirements through its internal fat oxidation (in which water is a byproduct). It also has the ability to concentrate its urine (with the help of long loops of Henle) so that minimal volume of water is used to remove excretory products. It has long nasal cavities that reduce water loss by cooling the air leaving the lungs.

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