poikilotherm meaning

Answer 1

Poikilotherm refers to an organism or organism that cannot regulate its body temperature internally. Instead, its body temperature fluctuates with the surrounding environment. Poikilotherms, also known as ectotherms, rely on external sources of heat, such as sunlight or heat from the environment, to increase their body temperature and regulate their metabolic functions. Examples of poikilothermic organisms include reptiles, amphibians, and most fish.