Question

Unique feature of mammalian body is the presence of:

• A. Four chambered heart
• B. Presence of diaphragm
• C. Warm-blooded
• D. Rib cage

Answer 1

Answer: (B)

Presence of diaphragm

• The presence of a diaphragm is a peculiar feature of the mammalian group.
• Four-chambered hearts can be found in birds too.
• Mammals and birds are warm-blooded animals due to their ability to maintain their body temperature.
• Rib cages are found in a lot of animals other than mammals like birds, reptiles, etc.

So the correct answer is 'Presence of Diaphragm'.