One of the following is a very unique feature of the mammalian body (a) homeothermy (b) presence of diaphragm (c) four chambered heart (d) rib cage
Option B The unique feature of mammals is the presence of diaphragm. It is a membrane that separates thoracic cavity from abdominal cavity. The cavity of other animals is not divided into thoracic and abdominal cavities. Homeothermy, four chambered heart and rib cage are the characters of mammals as well as some other animals also.
