Question

Which best describes organisms of the Precambrian era?

A. land plants and animals
B. dinosaurs and primitive mammals
C. single-celled organisms and soft, boneless animals
D. ferns and flying reptiles

Answer 1

Out of the choices given, the best way to describe the organisms of the Precambrian era are they were single-celled organisms and soft, boneless animals. One thing from that time that we still have today is the jellyfish. The correct answer is C.