Question

Animals having a built-in thermostat to maintain constant body temperature are known as
A.Biothermic
B.Poikilothermic
C.Oligothermic
D.Homoeothermic

Answer 1

Hint:Homoeothermic is a warm-blooded animal which has homoeostasis property of blood due to the presence of double circulation of blood in them e.g., leaves and mammals whereas Poikilothermic (cold-blooded) animals do not has such homeostasis property as they are devoid of double circulation in them e.g., amphibians and reptiles.

Complete answer:
Homeothermy is thermoregulation that keeps up a stable inward internal heat level paying little heed to outer impact. Hypothalamus is the implicit indoor regulator present in the homeothermic creature's body. It controls the body's reactions to the external temperature. At the point when you get hot, you sweat. Henceforth Animals with worked in indoor regulator i.e. Hypothalamus are Homeothermic. The generally known living homeotherms are birds and mammals and non avian dinosaurs. They are essentially endothermic. Some of the homeotherms maintain the body temperature through the behavioural mechanism or behavioural thermoregulation.

The major advantages of homeothermy include greater endurance in physical activity and exploit broader range of the thermal environment.
Homeothermic are the creatures having an almost uniform or constant internal temperature level. These creatures are known as warm blooded creatures, .e.g., winged animals, man.

Poikilothermic are those, having a variable temperature which vacillates with that of condition. They are known as the cold blooded creatures, .e.g., reptiles, creatures of land and water.

Biothermic are the organisms which have the ability to respond to the outer cold temperature by continuous shivering so as to produce heat in their body.

Oligothermic are the creatures which can bear relatively low temperature in the environment.

Hence ,the correct answer for this question is option D.

Note:The animals with built in thermostat are known as Homeothermic. They can control their internal body temperature and are not influenced by the external temperature.