NEET UG BIOLOGY MCQ: EVOLUTION

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[A]: Homology is the similarity between organs of same animal based on common ancestory.

[R]: Analogy is seen in every organ system from fish to man.

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Correct option: D

Both A and R are false

Option D is correct because both the assertion and the reason are false. Analogy, not homology, is based on different ancestry, and analogy is not seen in every organ system from fish to man.

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The main point of Darwin’s theory is Which one of the following is not a vestigial structure in Homo sapiens? The brain capacities of Homo habilis were Assertion (A): In mammals the forelimbs perform different functions.

Reason (R): The forelimbs in different mammals consist of different sets of bones. Identify the phenomenon in which the members of a species do not interbreed with the members of other species or same species Assertion: Organic compounds first evolved in earth required for origin of life were protein and nucleic acid.
Reason: All life forms were in water environment only.