Why is it not enough to depend only on external similarity to understand evolutionary relationships?
Answer and explanation
Correct answer: Because organs with similar function may have different origins
The governing concept is that evolutionary relationships are determined by common ancestry, not by appearance alone. Similar environments can produce analogous organs: these organs may perform the same function but arise from different evolutionary origins. Therefore, scientists also compare internal structures, fossils, embryonic features, and genetic evidence. Option A is correct; the other statements are scientifically false or overgeneralised.
Frequently asked questions
What is the correct answer to this question?
Because organs with similar function may have different origins
Why is this the correct answer?
The governing concept is that evolutionary relationships are determined by common ancestry, not by appearance alone. Similar environments can produce analogous organs: these organs may perform the same function but arise from different evolutionary origins. Therefore, scientists also compare internal structures, fossils, embryonic features, and genetic evidence. Option A is correct; the other statements are scientifically false or overgeneralised.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: How do Organisms Reproduce.
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