Assertion (A): Human kidneys can produce urine nearly four times concentrated than the initial filtrate formed. Reason (R): Presence of interstitial gradient helps in an easy passage of water from the collecting tubule thereby concentrating the urine/filtrate.
- ABoth Assertion (A) and Reason (R) are true and the Reason (R) is the correct explanation of Assertion (A).
- BBoth Assertion (A) and Reason (R) are true but the Reason (R) is not the correct explanation of Assertion (A).
- CAssertion (A) is true and the Reason (R) is false.
- DAssertion (A) is false and the Reason (R) is true.
✓ Correct answer: A
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