Q. 644.8( 4 Votes )

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) haemoglobin has greater affinity for carbon dioxide than oxygen.

(iv) alveoli increase surface area for the exchange of gases
A. (i) and (iv)

B. (ii) and (iii)

C. (i) and (iii)

D. (ii) and (iv)

Answer :

The tiny air-sacs at the end of the smallest bronchioles are known as Alveoli. Alveoli provides a large surface area for the exchange of gases.

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