In the diagram, A unique characteristic that distinguishes the class of vertebrates represented from other vertebrates is the presence of
a
two pair of limbs
b
scales on the lower legs
c
a pair of wings
d
a covering of feathers
Explanation
Correct Option
dVideo Explanation
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Hsgsvjkkny
5 years ago
Yeah it is feather,it can never be scale because snake has and it is a vertebrate
