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Question

Choose the correct statement with reference to organic evolution.
I) Flippers of whale and wings of bat exhibit analogy.
II) Wings of butterfly and wings of birds exhibit homology.
III) Organs with dissimilar structure are called analogous organs.
IV) Organs with similar structure and origin are called homologous organs.

A
I and II
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B
II and IV
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C
I and II
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D
III and IV
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Solution

The correct option is D III and IV
Statement IV is correct. Homologous structures have the same embryonic origins and basic structure, but they do not perform the same function.
Statement III is correct. Analogous structures have different embryonic origins but have the same basic structure and perform the same function.
Statement I is incorrect. Flippers of whale and wings of bat are homologous organs and not analogous organs.
Statement II is incorrect. Wings of butterfly and wings of birds are analogous organs and not homologous organs.

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