Birds and mammals share one of the following characteristics as a
common feature.
a. Pigmented skin
b. Alimentary canal with some modification
c. Viviparity
d. Warm blooded nature
NCERT Class XI
Biology - Exemplar Problems
Chapter 4. Animal Kingdom
Answers
Answered by
6
The answer is: (d) Warm blooded nature.
Answered by
5
The answer is: (d) Warm blooded nature.
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