1.

Assertion `:-` In fish ammonia is excreted by diffusion through gill surface as ammonium ions. Reason `:-` Some amount of urea may be retained in the kidney matrix of some animals to maintain a desired osmolarity.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .B. If both Assertion & Reason are True but Reason is not a correct explanation of the AssertionC. If Assertion is True but the Reason is False.D. If both Assertion & Reason are false.

Answer» Correct Answer - 2


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