Q. In which era Protozoa, sponge and algae were originated?
A) Cenozoic era
B) Azoic era
C) Proterozoic era
D) Mesozoic era
Explanation
Proterozoic era
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.