Question

Read the following features :-
(a) The forelimbs are modified into wings
(b) Endoskeleton is fully ossified and the
long bones are hollow with air cavities
(c) Respiration is by lungs along with air
sacs
(d) Digestive tract has additional chembers
i.e. crop & gizzard
Out of these which is not suitable features
according to flying adaptation in birds ?
Option :-
(1) Only 'c'
(2) Only 'd'
3) Only 'a'
4) Only 'b'
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Answer 1

hey mate ur answer is option d