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Evolution — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution1 Mark
MCQ
First mammals appeared in the period:
  • ✓
    Triassic
  • B
    Jurassic
  • C
    Cretaceous
  • D
    Tertiary
✓

Answer

Correct option: A.
Triassic
Triassic period, in geologic time, the first period of the Mesozoic era. It began $252$ million years ago.
Reptiles increased in diversity and number, and the first dinosaurs appeared during this period along with the appearance of first mammals.

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