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NEET 2006
Exam
NEET
Year
2006
Subject
Zoology
Chapter
Breathing and Exchange of Gases

NEET 2006 · Zoology · Breathing and Exchange of Gases

Which one of the following statements is incorrect?

Which one of the following statements is incorrect?

Options

  1. AThe principle of countercurrent flow facilitates efficient respiration in gills of fishes
  2. BThe residual air in lungs slightly decreases the efficiency of respiration in mammals
  3. CThe presence of non-respiratory air sacs, increases the efficiency of respiration in birds
  4. DIn insects, circulating body fluids serve to distribute oxygen to tissues.

Correct answer

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

Step-by-step solution

Residual air is the air which remains in the lungs after the most forceful expiration. It is about 1200ml1200 \mathrm{ml}. As the residual air remains in the lungs, it has no effect on respiration efficiency.
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