Question

Assertion- Lungs take in oxygen rich air and gives out carbon di-oxide rich air.
Reasoning- Diaphragm helps in expansion and contraction of lungs

Answer 1

Answer:

Ans is

Explanation:

The process of taking oxygen-rich air in the body is called inhalation. The process of giving out carbon dioxide-rich air is known as exhalation. Carbon dioxide is a waste product of cellular respiration during the production of energy.

Answer 2

Answer:

Both A And R are true....and the correct explanation

Explanation:

lungs take in o2 an gives out co2 only because diaphragm is exapanded and the ribs go inward and volume in the lungs increase which creates a pressure gradient making o2 to come in and push co2 out

hope you understood