Why are bird wings and insect wings considered analogous rather than homologous?
Answer and explanation
Correct answer: Their function is similar, but their basic structure and origin are different
Analogous organs perform a similar function but arise from different basic structures and evolutionary origins. A bird wing is a modified forelimb containing bones, whereas an insect wing is an outgrowth of the exoskeleton and has no corresponding vertebrate bone plan. Both support flight, but that shared function does not establish close common ancestry. Therefore option A is correct. Option B confuses analogy with homology, C is false, and D makes an unjustified claim about ancestry.
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What is the correct answer to this question?
Their function is similar, but their basic structure and origin are different
Why is this the correct answer?
Analogous organs perform a similar function but arise from different basic structures and evolutionary origins. A bird wing is a modified forelimb containing bones, whereas an insect wing is an outgrowth of the exoskeleton and has no corresponding vertebrate bone plan. Both support flight, but that shared function does not establish close common ancestry. Therefore option A is correct. Option B confuses analogy with homology, C is false, and D makes an unjustified claim about ancestry.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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