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What is the main advantage of the thin walls of alveoli?

Answer and explanation

Correct answer: Easy exchange of gases

The thin walls of alveoli reduce the distance across which respiratory gases must diffuse. Because the alveoli are also moist and closely associated with blood capillaries, oxygen can enter the blood and carbon dioxide can leave it rapidly. Therefore option A is correct. Digestion occurs in the alimentary canal, blood cells are formed mainly in bone marrow, and urine is produced by the kidneys.

Related tags

AlveoliThin-WallsRespirationLife ProcessesWorld Of LivingScienceClass 10 Mcq

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