Why can it be wrong to call all similar-looking organs homologous?
Answer and explanation
Correct answer: Because homologous organs require similarity in basic structure and origin
Homology is determined mainly by common basic structural plan and evolutionary origin, not merely by outward appearance. Homologous organs may perform different functions, such as the forelimbs of humans, whales, and bats, yet share underlying structural features. Conversely, organs can look similar or perform similar functions while having different origins and structures. Therefore, option A is correct; colour, digestion, and occurrence only in humans are not criteria for homology.
Frequently asked questions
What is the correct answer to this question?
Because homologous organs require similarity in basic structure and origin
Why is this the correct answer?
Homology is determined mainly by common basic structural plan and evolutionary origin, not merely by outward appearance. Homologous organs may perform different functions, such as the forelimbs of humans, whales, and bats, yet share underlying structural features. Conversely, organs can look similar or perform similar functions while having different origins and structures. Therefore, option A is correct; colour, digestion, and occurrence only in humans are not criteria for homology.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
