Question

In the strict sense, animals that rely only on the heat from the environment rather than on metabolism to raise their body temperature are called as

• A. ectothermic
• B. poikilothermic
• C. homeothermic
• D. endothermic

Answer 1

Answer: (A)

ectothermic

Answer 2

Ectothermic organisms are those that control body temperature through external means. As a result, organisms are dependent on environmental heat sources and have relatively low metabolic rates. For example, many reptiles regulate their body temperature by basking in the sun.