Which term describes organisms that regulate their body temperature internally?

Which term describes organisms that regulate their body temperature internally?

• A. Ectothermic
• B. Endothermic
• C. Entropy
• D. Evolution

Answer: (B)

Endothermy is the ability to regulate body temperature from within, mainly through metabolic heat production and physiological controls such as insulation, changing blood flow, and cooling or heating mechanisms. This keeps body temperature relatively constant even when the environment changes. In marine environments, endothermic animals like many mammals (whales, seals, dolphins) and some seabirds stay active in cold waters because they generate and retain heat internally. The other terms don’t describe this trait: ectotherms rely on external heat sources and their body temperature shifts with the surroundings; entropy is a thermodynamic measure of disorder; evolution refers to changes in populations over time.

Endothermy is the ability to regulate body temperature from within, mainly through metabolic heat production and physiological controls such as insulation, changing blood flow, and cooling or heating mechanisms. This keeps body temperature relatively constant even when the environment changes. In marine environments, endothermic animals like many mammals (whales, seals, dolphins) and some seabirds stay active in cold waters because they generate and retain heat internally. The other terms don’t describe this trait: ectotherms rely on external heat sources and their body temperature shifts with the surroundings; entropy is a thermodynamic measure of disorder; evolution refers to changes in populations over time.