Question

The process of taking in and giving out of the air is known as:

• A. Breathing
• B. Digestion
• C. Metabolism
• D. Excretion

Answer 1

The correct option is A Breathing

Breathing is process of taking in and giving out of the air for exchange of gases between the internal of body and the external environment. The taking in of air is called as inhalation and giving out of air is called exhalation. It is an important part of respiration and can be done by various organs like nose, skin, gills.

Hence the correct option is A, i.e., "breathing".