Question

Breathing rate of a person is not always constant. Give the reason for your answer.

Answer 1

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● Breathing rate of a person is not always constant. It changes according to the oxygen requirement of the body.

● Increased breathing rate provides greater amount of air entry into the lungs, hence blood can absorb oxygen at a faster rate.

Answer 2

ĂŃŚŴĔŔ

The number of times air is inhaled or exhaled in a minute is termed breathing rate. It increases with increase in physical activity.

The average rate of breathing in a man at rest position is 15-20 per minute.

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