What can be used to understand evolutionary relationships among organisms?
Answer and explanation
Correct answer: Study of homologous organs
The governing concept is homology and common ancestry. Homologous organs have the same basic structural plan but may perform different functions, such as the forelimbs of humans, bats and whales. This shared structure suggests descent from a common ancestor and therefore helps scientists infer evolutionary relationships. Body colour, food taste or breathing rate alone cannot reliably establish such relationships, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
Study of homologous organs
Why is this the correct answer?
The governing concept is homology and common ancestry. Homologous organs have the same basic structural plan but may perform different functions, such as the forelimbs of humans, bats and whales. This shared structure suggests descent from a common ancestor and therefore helps scientists infer evolutionary relationships. Body colour, food taste or breathing rate alone cannot reliably establish such relationships, so option A is correct.
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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