If the number of alveoli in the lungs decreases, what effect will it have on the body?
Answer and explanation
Correct answer: Surface area for gas exchange will decrease
Alveoli are tiny air sacs where oxygen diffuses into blood and carbon dioxide diffuses out. Their large number and clustered arrangement provide a very extensive, thin exchange surface. If alveoli are lost, the total surface area available for diffusion decreases, so gas exchange and oxygen uptake may become less efficient. Therefore option A is correct; the other choices are unrelated effects.
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What is the correct answer to this question?
Surface area for gas exchange will decrease
Why is this the correct answer?
Alveoli are tiny air sacs where oxygen diffuses into blood and carbon dioxide diffuses out. Their large number and clustered arrangement provide a very extensive, thin exchange surface. If alveoli are lost, the total surface area available for diffusion decreases, so gas exchange and oxygen uptake may become less efficient. Therefore option A is correct; the other choices are unrelated effects.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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