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Question
The wing of bird and human arm perform different functions but have the same embryonic origin. Such structures are known as
The wing of bird and human arm perform different functions but have the same embryonic origin. Such structures are known as
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Solution
The correct option is A Homologous structures
If any structure in organisms arises from common ancestors but perform a different function is called as homologous structure. In contrast, analogous structures are superficially similar and serve similar functions but have quite different structural and developmental patterns. The arm of a man, the wing of a bird, and the pectoral fins of a whale are homologous structures in that all have similar patterns of bones, muscles, nerves, blood vessels, and similar embryonic origins; each, however, has a different function.The wings of birds and those of butterflies, in contrast, are analogous structures—i.e., both allow flight but have no developmental processes in common.So, the correct answer is option A.
If any structure in organisms arises from common ancestors but perform a different function is called as homologous structure. In contrast, analogous structures are superficially similar and serve similar functions but have quite different structural and developmental patterns. The arm of a man, the wing of a bird, and the pectoral fins of a whale are homologous structures in that all have similar patterns of bones, muscles, nerves, blood vessels, and similar embryonic origins; each, however, has a different function.The wings of birds and those of butterflies, in contrast, are analogous structures—i.e., both allow flight but have no developmental processes in common.
So, the correct answer is option A.
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