Animal Kingdom Question 132
132. 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
Show Answer
Answer : b
Hints & Solutions
(b) Presence of diaphragm which separates the thoracic cavity from the abdominal cavity is the characteristic feature of all mammals. Homeothermy is the phenomenon whereby warm blooded animals, birds and mammals can maintain a constant body temperature. Four chambered heart is observed in birds and mammals. Rib cage occurs in all vertebrates.
