CBSE Class 10 Science 2021 Term 1 Solved Paper

Question : 37 of 60

Marks: +1, -0

Respiratory structures of two different animals-a fish and a human being are as shown.
Observe (a) and (b) and select one characteristic that holds true for both of them.

Both are placed internally in the body of animal.
Both have thin and moist surface for gaseous exchange.
Both are poorly supplied with blood vessels to conserve energy.
In both the blood returns to the heart after being oxygenated.

Solution:

The common features of the respiratory structure of both fish and human being is that both have thin and moist surface for easy diffusion of gases and substances.

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