What is the difference between a poikilotherm and a Homeotherm?
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.
What is the difference between Ectotherms and Endotherms?
An ectotherm (reptile/amphibian) relies primarily on its external environment to regulate the temperature of its body. Endotherms (birds) are able to regulate their body temperatures by producing heat within the body.
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 does the term Homeotherm mean?
: having a relatively uniform body temperature maintained nearly independent of the environmental temperature : warm-blooded There are several mechanisms by which homeothermic animals increase their heat production, including shivering, sympathetic nervous system activation and stimulation of thyroid hormone secretion.
Are humans Homeotherms or Poikilotherms?
Humans for example are in a critical condition if the temperature of their blood falls below 27 degrees Celsius. Fish, amphibians or reptiles are not greatly impacted by a slight drop in body temperature. They are among the poikilothermic organisms or ectotherms.
What is the difference between exothermic and ectothermic?
Endotherms use internally generated heat to maintain body temperature. Their body temperature tends to stay steady regardless of environment. Ectotherms depend mainly on external heat sources, and their body temperature changes with the temperature of the environment.
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 an example of a Heterotherm?
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.
Which of the following is a Homeotherm?
> Option C: Homeothermic animals are warm-blooded and maintain a constant body temperature for example birds and mammals. Rabbit is a mammal.
Is Testudo a Homeotherm?
Testudo (tortoise) belonging to Class Reptilia is a poikilotherm.
Is man a Homeotherm?
An organism that maintains its body temperature at a constant level, usually above that of the environment, by its metabolic activity. ‘Man is a homeotherm, meaning that body temperature is kept within narrow limits by complex control mechanisms.
What is the meaning of Endothermy?
Definition of endothermy : physiological generation and regulation of body temperature by metabolic means : the property or state of being warm-blooded.