What careful conclusion in evolution is obtained from examples of analogous organs?
Answer and explanation
Correct answer: Similar function does not always prove common ancestry.
Analogous organs perform similar functions but differ in their basic structural plans and evolutionary origins. Bird wings and insect wings both enable flight, yet they are built differently and did not arise from the same ancestral wing structure. Their similarity can result from convergent evolution, in which unrelated groups face similar demands. Consequently, similar function alone is insufficient evidence of common ancestry, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
Similar function does not always prove common ancestry.
Why is this the correct answer?
Analogous organs perform similar functions but differ in their basic structural plans and evolutionary origins. Bird wings and insect wings both enable flight, yet they are built differently and did not arise from the same ancestral wing structure. Their similarity can result from convergent evolution, in which unrelated groups face similar demands. Consequently, similar function alone is insufficient evidence of common ancestry, so option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Evolution and speciation.
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