Taking in air rich in oxygen into the body is called ____.

Q. Inhalation and exhalation of gases is called respiration.

Q. The respiratory system (involving inhalation and exhalation processes) is responsible for taking in oxygen rich air and expelling carbon dioxide rich air. Which of the following is the sequence in which events occur in the inhalation process?
P : Air pressure inside your lungs drops.
Q : The diaphragm contracts.
R : Air from outside rushes into your lungs.

Q. During inhalation, we take in air containing many gases but our body uses only oxygen. Which is the gas that is exhaled out?

Q. Fill in the blanks with the correct words.

1. .................... (Inhalation/Exhalation) is the first step in breathing.
2. Fish absorb oxygen from water through .................... (gills/diffusion).
3. The exchange of gases at the cellular level is called .................... (breathing/respiration).
4. Plants respire through .................... (stomata/seed).
5. Respiration in the absence of oxygen is .................... (aerobic/anaerobic).

Q. During which process is energy released?

(a) external respiration
(b) internal respiration
(c) inhalation
(d) exhalation