Only the right aortic arch is present in:

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Question

(C) In vertebrates,the aortic arches show significant evolutionary modifications.In $Mammals$,only the left systemic (aortic) arch persists.In $Birds$

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Birds

Vedclass · Answer

(C) In vertebrates,the aortic arches show significant evolutionary modifications.In $Mammals$,only the left systemic (aortic) arch persists.In $Birds$ $(Aves)$,only the right systemic (aortic) arch persists.In $Reptilia$,both left and right systemic arches are present.Therefore,the correct answer is $Birds$.

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