Eukaryotic organelle structures that are thought to have arisen from endosymbiotic relationships include:

Question

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Mitochondria and chloroplasts are both thought to have originated from endosymbiotic relationships in which an ancestral eukaryotic cell engulfed and formed a mutualistic relationship with a free-living bacterium. Mitochondria are thought to have arisen from the endosymbiosis of a proteobacterium, while chloroplasts are thought to have arisen from the endosymbiosis of a cyanobacterium. None of the other organelles listed have a clear endosymbiotic origin.

Eukaryotic Organelle Structures That Are Thought to Have Arisen from Endosymbiotic