Which one of the following statements is inco | vedclass

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(C) The correct answer is $C$. In insects,the respiratory system consists of a network of tubes called tracheae that open to the outside through spira

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

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(C) The correct answer is $C$. In insects,the respiratory system consists of a network of tubes called tracheae that open to the outside through spiracles. Oxygen is delivered directly to the tissues via the tracheal system,and the circulating body fluid (hemolymph) does not play a role in oxygen transport. Therefore,the statement that circulating body fluids serve to distribute oxygen in insects is incorrect. Residual air (about $1200\; mL$) remains in the lungs after forceful expiration to prevent lung collapse,but it does not decrease respiratory efficiency. Bird air sacs and fish countercurrent flow are both adaptations that enhance respiratory efficiency.

Which one of the following statements is incorrect?

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