In which of the following are the Syrinx,Furc | vedclass

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(A) The $Syrinx$ is the vocal organ of birds. The $Furcula$ (wishbone) is a forked bone formed by the fusion of the two clavicles,which acts as a spri

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Flightless birds

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(A) The $Syrinx$ is the vocal organ of birds. The $Furcula$ (wishbone) is a forked bone formed by the fusion of the two clavicles,which acts as a spring for the flight muscles. The $Pygostyle$ is the terminal fused vertebrae of the tail that supports the tail feathers. These structures are adaptations specifically associated with flight. Therefore,these structures are absent in flightless birds (Ratites) such as ostriches,emus,and kiwis.

In which of the following are the $Syrinx$,$Furcula$,and $Pygostyle$ absent?

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