Question

Which of the following statement(s) is (are) true about respiration?

i. During inhalation, ribs move inward and the diaphragm is raised
ii. in the alveoli exchange of gases take place. example oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air.
iii. hemoglobin has a greater affinity for Carbon dioxide than oxygen
iv. Alveoli increases surface area for exchange of gases.

a) (ii) and (iv)
b) (ii) and (iii)
c) (i) and (iv)
d) (i) and (iii)
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Answer 1

Answer:

1 and 3 are wrong obviously