What is the main reason for not considering analogous organs as strong evidence of common ancestry?
Answer and explanation
Correct answer: Their function may be similar but basic structure is different
The governing concept is the distinction between homologous and analogous organs. Analogous organs may perform a similar function because organisms face similar environmental demands, but their basic structure and evolutionary origin are different. Thus wings of insects and birds both help in flight, yet they do not by themselves indicate a common structural origin. Therefore option A is correct; colour, lack of function, and occurrence only in humans are unrelated claims.
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What is the correct answer to this question?
Their function may be similar but basic structure is different
Why is this the correct answer?
The governing concept is the distinction between homologous and analogous organs. Analogous organs may perform a similar function because organisms face similar environmental demands, but their basic structure and evolutionary origin are different. Thus wings of insects and birds both help in flight, yet they do not by themselves indicate a common structural origin. Therefore option A is correct; colour, lack of function, and occurrence only in humans are unrelated claims.
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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