Assertion : Mammals , living in deserts contain more concentrated urine .
Reason : They contain very long loop of Henle in their nephrons .

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

A

Explanation

In terrestrial organisms they need to conserve water which they adopt by having long loop of Henle in nephron which allows more water reabsorption and thus hypertonic or concentrated urine is formed.