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.
Frequently asked questions
What is the correct answer to this question?
Easy exchange of gases
Why is this the correct answer?
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.
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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