The oldest eukaryotes from fossil records
A) were from Archean cherts in the Pilbara district of Western Australia.
B) are about 3.5 billion years old and resemble cyanobacteria.
C) are stromatolites.
D) contain chloroplasts and resemble blue-green algae.
E) demonstrate that the earth became oxygen rich through photosynthesis about 3.5 billion years ago.

Question

Quizplus · Accepted Answer

The oldest eukaryotes in fossil records contain chloroplasts and resemble blue-green algae, indicating the presence of photosynthetic organisms.

The Oldest Eukaryotes from Fossil Records