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Assertion: Urea is a less toxic excretory substance comparatively to urice acid. Reason: Birds and insects are ureotelic animals.A. Both Assertion and Reason are true and Reason is the correct explanation of the AssertionB. Both Assertion and Reason are true, but Reason is not the cunect explanation of AssertlonC. Assertion is true, but Reason is falseD. Both Assertion and Reason are false

Answer» Correct Answer - D


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