Assertion :Double circulation is incomplete in amphibians and reptiles Reason: Unlike in birds and mammals, in amphibian and reptiles, the left atrium receives oxygenated blood and right atrium receives deoxygenated blood.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Double circulation is incomplete in amphibians and reptiles because of the presence of a three-chambered heart. like birds and mammals, in amphibian and reptiles, the left atrium receives oxygenated blood and right atrium receives deoxygenated blood. Blood from both these chambers mixes in a single chamber and results in incomplete circulation. So, reason is false
So, the correct answer is 'Assertion is correct but Reason is incorrect'

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