Which of the following statements are true about respiration? (i) During inhalation, ribs move inward and diaphragm is raised. (ii) The gaseous exchange takes place in the alveoli. (iii) Hemoglobin has a greater affinity for carbon dioxide than oxygen. (iv) Alveoli increase the surface area of the exchange of gases (a) (i) and (iv) (b) (ii) and (iii) (c) (i) and (iii) (d) (ii) and (iv)
BiologyClass 10ICSEAnswered 27 Mar 2026
Answer
- (ii) and (iv)
Alveoli are the tiny air sacs that help in the exchange of gases. These are connected to tiny blood capillaries. They also increase the surface area of gases in order to ease the process of the exchange of gases.
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