Science
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.
Respiratory System
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Answer
Both have thin and moist surface for gaseous exchange.
Reason — Gills as well as alveoli have moist surface. Also, fishes have only two chambers to their hearts, and the blood is pumped to the gills, is oxygenated there, and passes directly to the rest of the body.
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