The vertebrae of birds are characteristically [CBSE PMT 1988; AIIMS 19 – McqOptions

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1.	The vertebrae of birds are characteristically [CBSE PMT 1988; AIIMS 1999]
A.	Heterocoelous
B.	Acoelous
C.	Opisthocoelous
D.	Amphicoelous
Answer» B. Acoelous

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