A new species of mammal is discovered deep in the Antarctic. This mammal contains an organ that does not seem to be homologous to any other known organ. Upon examination, it appears that this organ is responsible for secreting hormones necessary for regulating subcutaneous fat levels to regulate body temperature. To which system does this new organ most likely belong?
A) digestive system
B) integumentary system
C) immune system
D) endocrine system
E) nervous system

Question

Quizplus · Accepted Answer

The organ described is responsible for secreting hormones, which is a primary function of the endocrine system. The endocrine system includes glands and organs that produce and secrete hormones to regulate various bodily functions, including metabolism, growth, and temperature regulation.

A New Species of Mammal Is Discovered Deep in the Antarctic