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Question

Bird vertebrae are:

A
Acoelous
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B
Heterocoelous
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C
Amphicoelous
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D
Procoelous
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Solution

The correct option is C Heterocoelous

  • The presence of vertebrae or a vertebral column is one of the defining features of chordates. Different classes of vertebrates have different kinds of vertebrae.
  • Birds have heterocoelous vertebrae which are bones with saddle-shaped surfaces. Such a form allows extensive vertical and lateral flexion motion without stretching the nerve cord too much.
  • So, the correct answer is option B- 'Heterocoelous'.


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