Read the given statements and select the correct option.

Statement 1 : Mammals can eat while breathing.

Statement 2 : Mammals have negative-pressure breathing.

Both statements 1 and 2 are Correct.

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Statement 1 is correct but statement 2 is incorrect.

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Statement 1 is incorrect but statement 2 is correct.

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Both statements 1 and 2 are incorrect.

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Solution

The correct option is A Both statements 1 and 2 are Correct.
Mammals like humans along with birds and reptiles have negative pressure breathing. They use their mouths for both eating and breathing. Breathing requires pressure gradient. Mammals create pressure gradient using their diaphragm. The high volume and low pressure in the lung cavity results in the air to be sucked in. They cannot swallow and breathe at once. However, it is possible for them to eat while breathing.
Thus, the correct answer is option (A).

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