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How does the endosymbiont theory intertwine with photosynthesis?

User Michjnich
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Answer: ingestion of a cyanobacterium which remained intact and evolved into a chloroplast. Cyanobacteria evolved oxygenic photosynthesis.

Explanation: The eucaryote cell presents this picture.

An archaean cell ingested an aerobic bacterium which remained intact and the two co-evolved into cell plus mitochondria. A cell like this ingested a cyanobacterium which remained intact and evolved into a chloroplast. It is still unclear how the eucaryote nucleus, multiple chromosomes and membrane bound organelles, e.g. Golgi apparatus and endoplasmic reticulum evolved.

User Dominik Matis
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