Which term matches the definition: an animal body temperature is mainly determined by the temperature of its environment?

Which term matches the definition: an animal body temperature is mainly determined by the temperature of its environment?

• A. Ectotherm
• B. Endotherm
• C. Pollination
• D. Petal

Answer: (A)

Body temperature regulation in animals can be governed by external heat sources. When an animal’s body temperature mainly follows the surrounding environment, it is ectothermic. Ectotherms rely on heat absorbed from the environment or behavioral choices like basking in the sun or seeking shade to control heat gain; their body temperature and activity level vary with the ambient temperature. Endotherms, by contrast, generate heat metabolically and maintain a relatively constant internal temperature, supporting stable enzyme function and activity across climates. The other terms refer to plant processes and structures and do not describe temperature regulation.

Body temperature regulation in animals can be governed by external heat sources. When an animal’s body temperature mainly follows the surrounding environment, it is ectothermic. Ectotherms rely on heat absorbed from the environment or behavioral choices like basking in the sun or seeking shade to control heat gain; their body temperature and activity level vary with the ambient temperature. Endotherms, by contrast, generate heat metabolically and maintain a relatively constant internal temperature, supporting stable enzyme function and activity across climates. The other terms refer to plant processes and structures and do not describe temperature regulation.