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Which one of the following are analogous structures?

1. Wings of Bat and Wings of Pigeon.
2. Gills of Prawn and Lungs of Man.
3. Thorns of Bougainvillea and Tendrils of Cucurbita.
4. Flippers of Dolphin and Legs of Horse.

Correct answer: Gills of Prawn and Lungs of Man.

Solution

Gills of prawn and lungs of man both help in respiration, but they arise from very different body plans and evolutionary origins. That makes them analogous structures, not homologous ones.

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