Birds and mammals share one of the following characteristics as a common feature. (a) Pigmented skin (b) Pneumatic bones (c) Viviparity (d) Warm blooded Eduinfy.com

NCERT Solution: Animal Kingdom

Birds and mammals share one of the following characteristics as a common feature. (a) Pigmented skin (b) Pneumatic bones (c) Viviparity (d) Warm blooded

NCERT Exampler

Ans. (d) Warm blooded
Explanation: Pneumatic bones and viviparity is present in birds but not in mammals. Pigmented skin is present only in mammals. Hence, ‘d’ is the correct option.