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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.

Related tags

Homologous-OrgansBasic-StructureEvolutionHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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