A) Homeothermy
B) Presence of diaphragm
C) Four chambered heart
D) Rib cage
Correct Answer: B
Solution :
Homeothermy is found in birds also, similarly four chambered heart and rib cage is also characterised by other classes apart from mammals. But presence of diaphragm is a very unique feature of mammals which separates thoracic cavity from interior abdominal cavity.
You need to login to perform this action.
You will be redirected in
3 sec
