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Evolution — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution1 Mark
MCQ
Evolution of unicellular organism was in the $..........$ era.
  • A
    Proterozoic
  • B
    Palaeozoic
  • ✓
    Archaeozoic
  • D
    Mesozoic
✓

Answer

Correct option: C.
Archaeozoic
Archaeozoic era occured before $2.5$ billion years ago, when the only life forms were blue$-$green algae and bacteria.
Evolution of unicellular organisms occurred during this era.

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