(D) : The circulatory system of insects is open,whereby blood (haemolymph) flows freely through the body cavity (haemocoel). Insects possess a trachea

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

(D) : The circulatory system of insects is open,whereby blood (haemolymph) flows freely through the body cavity (haemocoel). Insects possess a tracheal system for respiration,where oxygen is delivered directly to tissues via tubes called tracheae,bypassing the blood. Haemolymph does not contain an oxygen-carrying pigment like $Hb$ (haemoglobin); therefore,it does not assist in the transport of oxygen.

Class 11 Biology Breathing and Exchange of Gases Mix Examples- Breathing and Exchange of Gases

Medium

Which one of the following statements is incorrect?

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