Question

The maintenance of relatively constant internal environment is called:

• A. exotherms
• B. homeostasis
• C. endotherms
• D. stenothermals

Answer 1

The correct option is B

homeostasis

Homeostasis can be defined as a property of an organism or system that maintains its parameters, like temperature, blood pressure, water content, salt content etc. within a constant range.
An endotherm is an organism that maintains its body at a metabolically favorable temperature, largely by the use of heat released by its internal bodily functions instead of relying on ambient heat.
Exotherm or a cold-blooded animal unlike an endotherm cannot regulate its body temperature and the internal temperature varies along with the ambient temperature. A stenotherm is a species or living organism capable of living or surviving only within a narrow temperature range.