As temperature decreases, the metabolic rate of an endotherm typically ____, and the metabolic rate of an ectotherm typically ____.
A) decreases; decreases
B) increases; decreases
C) decreases; increases
D) increases; increases
E) increases; remains the same

Question

Quizplus · Accepted Answer

Endotherms regulate their body temperature internally and often increase their metabolic rate to generate more heat as external temperatures decrease. Ectotherms, on the other hand, rely on external sources of heat to regulate their body temperature, so their metabolic rate typically decreases as the temperature drops, since they become less active.

As Temperature Decreases, the Metabolic Rate of an Endotherm Typically