According to the endosymbiont theory
A)mitochondria are evolved from non-sulfer purple bacteria and chloroplasts are evolved from cyanobacteria.
B)mitochondria are evolved from cyanobacteria bacteria and chloroplasts are evolved from non-sulfer purple.
C)mitochondria and chloroplasts can exist independently of cells.
D)mitochondria and chloroplasts are evolved from other proto-eukaryotic cells.

Question

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The endosymbiont theory proposes that mitochondria are evolved from non-sulfer purple bacteria and chloroplasts are evolved from cyanobacteria. This theory suggests that these organelles were once independent bacteria that were taken up by larger cells and developed a symbiotic relationship, eventually becoming a part of the host cell. This theory is supported by various lines of evidence such as the similarities between the DNA and membranes of the organelles and those of certain bacterial species.

According to the Endosymbiont Theory