Human arm is homologous with:
Correct answer: D. Both Seal's flipper and Bird's wing
- A. Seal's flipper
- B. Octopus tentacle
- C. Bird's wing
- D. Both Seal's flipper and Bird's wing
Explanation
Anatomically, the human arm, the flippers of seals, and the wings of the birds are the forelimbs containing similar bones. These forelimbs have a common origin and similar anatomical features but have been modified to perform different functions. Flippers allow the seal to swim, birds fly using their wings and humans perform a variety of functions using the arms. Such structures are homologous to each other.
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