Why do homologous organs indicate common ancestry?
Answer and explanation
Correct answer: Because their basic plan is similar even if functions differ
Homologous organs are structures inherited from a common ancestral body plan. Their internal arrangement is similar, although natural selection and different environments may modify their functions; for example, a forelimb can become an arm, wing, or flipper. Thus option A is correct. Option B confuses homology with identical function, while C states the opposite and D incorrectly describes inherited structural features as acquired traits.
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What is the correct answer to this question?
Because their basic plan is similar even if functions differ
Why is this the correct answer?
Homologous organs are structures inherited from a common ancestral body plan. Their internal arrangement is similar, although natural selection and different environments may modify their functions; for example, a forelimb can become an arm, wing, or flipper. Thus option A is correct. Option B confuses homology with identical function, while C states the opposite and D incorrectly describes inherited structural features as acquired traits.
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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