Birds differ from bats in the absence of [JIPMER 1985; CPMT 1989] – McqOptions

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1.	Birds differ from bats in the absence of [JIPMER 1985; CPMT 1989]
A.	4-chambered heart
B.	Homoiothermy
C.	Diaphragm
D.	Tracheae
Answer» D. Tracheae

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