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NEET UG BIOLOGY MCQ: EVOLUTION
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First mammal occurred in which era/period?
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Correct option: B
Triassic –Mesozoic
Option B (Triassic –Mesozoic) is correct because the first mammals appeared during the Triassic period, which is part of the Mesozoic era.
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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.
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.