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Question
Breathing is a process that
- provides O2 to the body.
- breaks down food to release energy.
- helps the body to get rid of CO2.
- produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
Options
(i) and (ii)
(ii) and (iii)
(i) and (iii)
(ii) and (iv)
Solution
(i) and (iii)
Explanation:
Breathing means taking in air rich in oxygen and giving out air rich in carbon dioxide with the help of respiratory organs. The taking in of oxygen-rich air into the body is called inhalation and giving out of carbon dioxide-rich air is known as exhalation.
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