Adaptations for Aquatic and Aerial Movement · NCERT Biology

The wing bones of birds are modified mainly to:

  1. Maximize strength and minimize mass for flight
  2. Increase overall flexibility for maneuvering only
  3. Store calcium reserves for muscle contraction
  4. Support bipedal terrestrial locomotion on land
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Correct answer: Maximize strength and minimize mass for flight

Bird wing bones have evolved to be strong yet lightweight, largely through hollow internal structures with internal struts. This combination is essential for generating the power needed for sustained flight without excessive weight.

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