Multiple choice

Which of the following are examples of homologous structures?

  1. Pentadactyl limb of mammals, birds, amphibians and reptiles

  2. Wings of insects and bats

  3. Wing of insects and birds

  4. Fins in fish and flippers in mammals
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A Correct answer
Explanation

Homologous structures share a common evolutionary origin, such as the pentadactyl limb found in mammals, birds, amphibians, and reptiles, despite serving different functions. Wings of insects and birds/bats are analogous structures because they evolved independently for flight.

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