Adaptations for Aquatic and Aerial Movement · NCERT Biology

Which skeletal adaptation supports flight in birds?

  1. Solid heavy bones
  2. Cartilaginous endoskeleton
  3. Pneumatic (hollow) bones
  4. Fused ribs only
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Correct answer: Pneumatic (hollow) bones

Pneumatic bones are hollow and air-filled, reducing body weight. This adaptation makes flight energetically efficient.

Difficulty: Medium Question 23 of 40

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