Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Zoology & Animal KingdomClasses of Animals
The first true mammals originated in which period?
- A.Jurassic Period
- B.Triassic PeriodCorrect answer
- C.Cretaceous Period
- D.Permian Period
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Practice these MCQs in the appQuick fact: The first true mammals originated in the Triassic Period.