Which of the following did not provide evidence that chloroplasts arose from the engulfment of a cyanobacterium by a eukaryotic cell?
A) Electron microscopy
B) Nucleic acid sequencing
C) Presence of cyanobacterial photosynthetic pigments in green plants
D) Presence of peptidoglycan in glaucophytes
E) Presence of cyanobacterial pigments in red algae

Question

Which of the following did not provide evidence that chloroplasts arose from the engulfment of a cyanobacterium by a eukaryotic cell?
A) Electron microscopy 
B) Nucleic acid sequencing
C) Presence of cyanobacterial photosynthetic pigments in green plants
D) Presence of peptidoglycan in glaucophytes
E) Presence of cyanobacterial pigments in red algae

Quizplus · Accepted Answer

The presence of cyanobacterial photosynthetic pigments in green plants does not directly provide evidence for the endosymbiotic origin of chloroplasts, as these pigments could have been acquired through other means. The other options provide more direct evidence of the endosymbiotic theory.

Which of the Following Did Not Provide Evidence That Chloroplasts