Which of the following statements is correct?

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Question

(C) Statement $C$ is correct because terrestrial organisms,such as mammals,birds,and reptiles,primarily use lungs for the exchange of gases.Statement

Vedclass · Accepted Answer

Lungs are used by terrestrial organisms for the exchange of gases.

Vedclass · Answer

(C) Statement $C$ is correct because terrestrial organisms,such as mammals,birds,and reptiles,primarily use lungs for the exchange of gases.Statement $A$ is incorrect because $O_2$ is not used to 'directly' break down molecules; rather,it is the final electron acceptor in the electron transport chain during aerobic respiration to facilitate the complete oxidation of glucose.Statement $B$ is incorrect because earthworms respire through their moist skin (cutaneous respiration),not through tracheal tubes.Statement $D$ is incorrect because insects use a network of tracheal tubes for respiration,not their cuticle.

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