Chloroplasts are thought to have originated from endosymbiosis of _______ by a large host cell.
A) anaerobic bacteria
B) photosynthetic eubacteria such as cyanobacteria
C) fungi such as yeast
D) nonphotosynthetic aerobic bacteria

Question

Quizplus · Accepted Answer

Chloroplasts share many features with photosynthetic eubacteria, such as cyanobacteria, including the presence of thylakoid membranes and their ability to carry out photosynthesis. This suggests that chloroplasts may have originated from endosymbiosis of an ancestral photosynthetic eubacterium by a larger host cell.

Chloroplasts Are Thought to Have Originated from Endosymbiosis of _______