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Question

Which of the following structures is homologus to the wing of a bird?

A
Dorsal fin of a shark
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B
Wing of a moth
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C
Hind limb of rabbit
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D
Flipper of whale
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Solution

The correct option is D Flipper of whale
Homologous organs are the organs of different animals which have similar basic structure but different functions.
Flippers of whales and wings of birds considered as homologous organs because they both have the same anatomy, i.e., they have same skeletal structures, and they perform different functions. Flippers of whales are used to swim whereas the wings of birds are used for flight.

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