Which of these is not a part of the feather of a bird?

Which of these is not a part of the feather of a bird?

  • A.
    Wing
  • B.
    aftershaft
  • C.
    Inferior umblilicus
  • D.
    Vane
  • E.
    Barbule
Correct Answer: Option A
Explanation

The feather contains a vane, afterfeather, calamus, barb, rachis.

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