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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.

Related tags

Homologous OrgansEvolutionary RelationshipCommon AncestorHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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