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

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Biology JAMB 1978

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

  • Wing checkmark
  • aftershaft
  • Inferior umblilicus
  • Vane
  • Barbule

The correct answer is: A

Explanation

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

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