According to the endosymbiotic theory, the original chloroplast was a
A)chemisynthetic archaea.
B)green algae.
C)purple sulphur bacteria.
D)mitochondria.
E)photosynthetic prokaryote.

Question

Quizplus · Accepted Answer

The endosymbiotic theory proposes that eukaryotic cells arose from the symbiotic relationship between different prokaryotic cells. According to this theory, the original chloroplast was a photosynthetic prokaryote that was engulfed by another prokaryotic cell and eventually evolved into a chloroplast. This is supported by the fact that chloroplasts have their own DNA, ribosomes, and can reproduce independently within a cell.

According to the Endosymbiotic Theory, the Original Chloroplast Was a