The maintenance of relatively constant internal environment is called:
A
exotherm
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B
homeostasis
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C
endotherm
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D
stenotherm
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Solution
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.