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AIPMT 2006 Biology Solved Paper

Question : 82

Total: 99

Which one of the following statements is incorrect?

The residual air in lungs slightly decreases the efficiency of respiration in mammals
The presence of non-respiratory air sacs, increases the efficiency of respiration in birds
In insects, circulating body fluids serve to distribute oxygen to tissues
The principle of countercurrent flow facilitates efficient respiration in gills of fishes

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