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Question

Which of the following structures is homologous to the wings of the birds?


A

Wing of a Moth

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B

Hind limb of Rabbit

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C

Flippers of Whale

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D

Dorsal fin of a Shark

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Solution

The correct option is C

Flippers of Whale


The correct option is C.

Explanation of the correct option:

  1. Structures having comparable anatomy, appearance, embryology, and genetics but different functions are known as homologous structures.
  2. Homologous structures include the human arm, a bird or bat's wing, a dog's leg, a dolphin or whale's flipper, and the wing of a bird or a bat.
  3. They are distinct and serve different purposes, although they are comparable and have similar characteristics.
  4. Because of their identical underlying architecture, they are regarded as homologous structures.

Explanation of the incorrect options:

Option A:

  1. Analogy, in biology, is the similarity of function and apparent likeness of structures that have distinct origins.
  2. For example, the wings of a fly, a moth, and a bird are comparable because they arose separately as adaptations to the same function—flying.

Option B:

The hind limb of a rabbit is not homologous to the wings of the birds.

Option D:

  1. Sharks and dolphins as species are two further examples of comparable structures.
  2. Although they have a similar function, their evolutionary origins are different resulting in different morphology.

Final answer: The structure that is homologous to the wings of the birds is the flippers of whales.


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