Why is the respiratory surface kept inside the body in terrestrial organisms?
Answer and explanation
Correct answer: To reduce unnecessary water loss
The governing concept is that gas exchange requires a moist respiratory surface. In terrestrial organisms, an exposed moist surface would lose water rapidly through evaporation. Keeping the surface inside the body, as in lungs, protects it while still allowing oxygen to enter and carbon dioxide to leave. Therefore, option A is correct; the other options do not describe the function of a respiratory surface.
Frequently asked questions
What is the correct answer to this question?
To reduce unnecessary water loss
Why is this the correct answer?
The governing concept is that gas exchange requires a moist respiratory surface. In terrestrial organisms, an exposed moist surface would lose water rapidly through evaporation. Keeping the surface inside the body, as in lungs, protects it while still allowing oxygen to enter and carbon dioxide to leave. Therefore, option A is correct; the other options do not describe the function of a respiratory surface.
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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