Due to the presence of which vertebrae,birds can move their neck through 180 degree?
2 points
Pneumatis
Heterocoelous
Dimorphism
Petronia
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The answer is Heterocoelous
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Answer:
Heterocoelous vertebrae are characteristic of birds neck. The centrum is saddle-shaped. It permits extensive lateral and vertical flexion motion without stretching the nerve cord too extensively or wringing it about its long axis providing high flexibility to the neck movement.
Explanation:
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