Assertion :Mammals can eat while breathing. Reason: Mammals have negative-pressure breathing.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Mammals like humans along with birds and reptiles have negative pressure breathing. They use their mouths for both eating and breathing. Breathing requires a pressure gradient. Mammals create pressure gradients using their diaphragm. The high volume and low pressure in the lung cavity result in the air being sucked in. They cannot swallow and breathe at once. However, they can eat while breathing.
Thus, the correct answer is option A.

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