Which of the following statements is correct?

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(D) Cellular respiration is the process by which cells derive energy from glucose. For aerobic respiration,all animals require $O_2$ as the final elec

Vedclass · Accepted Answer

All animals need $O_2$ for respiration.

Vedclass · Answer

(D) Cellular respiration is the process by which cells derive energy from glucose. For aerobic respiration,all animals require $O_2$ as the final electron acceptor in the electron transport chain. Option $A$ is incorrect because cellular respiration is a metabolic process,not dependent on an external medium. Option $B$ is incorrect because some small animals (like sponges or cnidarians) rely on simple diffusion and do not have blood for transport. Option $C$ is incorrect because many organisms (like insects) use tracheal systems,and some use skin (cutaneous respiration) rather than gills or lungs. Option $D$ is the correct statement as aerobic respiration is a universal requirement for energy production in animals.

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