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Which one of the following statements is...

Which one of the following statements is incorrect ?

A

The residual air in lungs slightly decreases the efficiency of respiration in mammals (

B

The presence of non-respiratory air sacs, increases the efficiency of respiration in birds

C

In insects, circulating body fluids serve to distribute oxygen to tissues

D

The principle of countercurrent flow facilitates efficient respiration in gills of fishes

Text Solution

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The correct Answer is:
B
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