AIPMT PRELIMS 2006 Zoology Respiratory System MCQ Question
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
Correct Answer
Detailed Explanation
Insects use a tracheal system for gas exchange, where air is directly delivered to tissues, not through circulating body fluids.
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