Refer to the figure. According to the depiction of the endosymbiotic origin of eukaryotic chloroplasts, which statement is correct?
A) Bacteria are more closely related to Eukarya than to Archaea.
B) The common ancestor of Archaea and Eukarya possessed chloroplasts.
C) Some archaea possess chloroplasts.
D) Mammals possess chloroplasts, which become functional during starvation.
E) In the Eukarya, chloroplasts have their own DNA.

Question

Refer to the figure.  According to the depiction of the endosymbiotic origin of eukaryotic chloroplasts, which statement is correct?
A) Bacteria are more closely related to Eukarya than to Archaea. 
B) The common ancestor of Archaea and Eukarya possessed chloroplasts. 
C) Some archaea possess chloroplasts. 
D) Mammals possess chloroplasts, which become functional during starvation. 
E) In the Eukarya, chloroplasts have their own DNA.

Quizplus · Accepted Answer

According to the figure, chloroplasts originated from an endosymbiotic event where a photosynthetic bacteria was engulfed by a non-photosynthetic eukaryotic cell. As a result, it is known that chloroplasts in eukaryotes have their own DNA, making option E the correct choice. Option A is incorrect because the figure only shows that eukaryotes and bacteria are related through this specific endosymbiotic event, not in general. Option B is incorrect because the figure does not depict a common ancestor of Archaea and Eukarya possessing chloroplasts. Option C is incorrect because the figure only shows one specific example of a bacteria being engulfed by a eukaryotic cell, not that it happens with archaea. Option D is incorrect because mammals do not possess chloroplasts.

Refer to the Figure