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.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free