Why are homologous organs considered evidence for evolution?
Answer and explanation
Correct answer: Because their basic structure is similar but functions may differ
Homologous organs share a similar underlying anatomical plan because they were inherited from a common ancestor, although they may perform different functions in descendants. For example, the forelimbs of humans, whales, and bats contain corresponding bones adapted for different uses. This evidence of common structure supports evolution, so option B is correct. Their functions are not always identical, and they are not restricted to plants or without genes.
Frequently asked questions
What is the correct answer to this question?
Because their basic structure is similar but functions may differ
Why is this the correct answer?
Homologous organs share a similar underlying anatomical plan because they were inherited from a common ancestor, although they may perform different functions in descendants. For example, the forelimbs of humans, whales, and bats contain corresponding bones adapted for different uses. This evidence of common structure supports evolution, so option B is correct. Their functions are not always identical, and they are not restricted to plants or without genes.
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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