Which statement is correct?

Question

Quizplus · Accepted Answer

The thermoneutral zone is the temperature range within an endotherm's environment where it can maintain its body temperature without expending a lot of energy. This zone is bounded by a lower critical temperature (when the body has to activate thermogenic processes to maintain its temperature) and an upper critical temperature (when the body has to activate cooling processes to maintain its temperature). Therefore, statement A is correct.

Statement B is incorrect because below the thermoneutral zone, an endotherm's thermoregulatory responses require energy to generate heat.

Statement C is also incorrect because above the thermoneutral zone, an endotherm's thermoregulatory responses require a lot of energy to cool down or generate heat.

Statement D is incorrect because within the thermoneutral zone, an endotherm's thermoregulatory responses are minimal, and it can maintain its temperature with little energy expenditure.

Statement E is incorrect because endotherms still need to expend energy to maintain their body temperature outside the thermoneutral zone.

Which Statement Is Correct