Bird wings and insect wings are similar in flying yet they are not homologous. What is the reason?
Answer and explanation
Correct answer: Their basic structure and origin are different
Homologous organs share a basic structural plan and common evolutionary origin, even if their functions differ. A bird wing is a modified, bony forelimb, whereas an insect wing is an outgrowth of the body wall with a different construction and origin. Their shared function, flight, therefore represents analogy rather than homology. Option A is correct; the other choices deny flight or incorrectly claim a shared bone plan or organism.
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What is the correct answer to this question?
Their basic structure and origin are different
Why is this the correct answer?
Homologous organs share a basic structural plan and common evolutionary origin, even if their functions differ. A bird wing is a modified, bony forelimb, whereas an insect wing is an outgrowth of the body wall with a different construction and origin. Their shared function, flight, therefore represents analogy rather than homology. Option A is correct; the other choices deny flight or incorrectly claim a shared bone plan or organism.
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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