What makes heterothermy different from poikilothermic?
Poikilothermic organisms have a variable internal temperature. Their temperature is not regulated as it is in homeothermic animals, whose temperature varies little. In order to remain consistent with the term homeotherm, the term poikilotherm was replaced by the term heterotherm.
What is the difference between homeothermic and poikilothermic?
The key difference between homeothermic and poikilothermic is that homeothermic is a living organism that maintains a stable internal body temperature irrespective of external influence, while poikilothermic is a living organism whose body temperature varies considerably.
What is the difference between a poikilotherm and an ectotherm?
As nouns the difference between ectotherm and poikilotherm is that ectotherm is (biology) a cold-blooded animal which regulates its body temperature by exchanging heat with its surroundings while poikilotherm is a cold-blooded animal.
What happens to the metabolic rate of a poikilotherm as you warm it and why?
Homeotherms, some fishes, and a species of sea turtle use restriction of circulation, insulating materials, and a countercurrent mechanism to reduce heat loss to the environment. In poikilotherms, metabolic rate increases with increasing temperature.
What is a homeothermic poikilotherm?
homeotherm: An animal that maintains a constant internal body temperature, usually within a narrow range of temperatures. poikilotherm: An animal that varies its internal body temperature within a wide range of temperatures, usually as a result of variation in the environmental temperature.
Are hummingbirds Heterothermy?
Bats and hummingbirds go into what is known as torpor and bears hibernate. Both are examples of heterothermy; where the internal temperature of the animal drops during specific periods of time, usually when food is scarce.
Why is endothermy advantageous?
In general, endothermy is advantageous. One advantage of endothermy is that it gives endothermic animals greater stamina than ectothermic animals. Because of their faster metabolism, endothermic animals can quickly resupply muscles with energy and rapidly break down muscular waste products.
What are the advantages and disadvantages of Endothermy and Ectothermy?
Being endothermic allows us to live in cooler areas and regulate our body temperatures to fight off infection (think of the fever you get fighting off the flu). The downside, though, is that regulating body temperature is energetically costly, and warm-blooded animals need more food than cold-blooded ones.
What is a poikilotherm?
any animal whose body temperature follows that of the surrounding environment. Poikilotherms are described as cold-blooded, but the body temperature may be quite high.
What are the advantages and disadvantages of homeotherms and poikilotherms?
This ability of homeotherms and poikilotherms related to having to maintain a constant body temperature has its own advantages and disadvantages. Some of which are that homeotherms need to use less resources as their body enzymes are highly efficient due to the fact that they need to operate in a narrow temperature range.
What are some examples of homeotherms and poikilotherms?
Examples of poikilotherms are fish and reptiles. This ability of homeotherms and poikilotherms related to having to maintain a constant body temperature has its own advantages and disadvantages.
What is heterothermy in biology?
Heterothermy. Heterothermy or heterothermia (from Greek ἕτερος heteros “other” and θέρμη thermē “heat”) is a physiological term for animals that vary between self-regulating their body temperature, and allowing the surrounding environment to affect it. In other words, they exhibit characteristics of both poikilothermy and homeothermy .