[Campbell Biology P.46] Which of the following statements accurately distinguishes between ... | Practice Question

Which of the following statements accurately distinguishes between endothermy and ectothermy, as described in the context of thermoregulation?

• A: Endotherms primarily generate their own body heat through metabolic processes, while ectotherms primarily gain heat from external sources.
• B: Endotherms maintain a perfectly constant internal body temperature regardless of external conditions, whereas ectotherms always have fluctuating body temperatures.
• C: Endothermy is exclusively found in mammals and birds, while ectothermy is only observed in reptiles and amphibians.
• D: Endotherms are generally more susceptible to environmental temperature changes than ectotherms due to their reliance on internal heat production.