1.

Assertion : Birds have one ovary. Reason : This reduces the body weight for flight.A. Both Assetion and Reason are true and Reason is the correct exp lanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Reason is true, but Assertion is false

Answer» Correct Answer - A
Birds have many adaptations for flight. They have pneumatic bones and only one overy, which reduces the body weight.


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