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Question

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.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
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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