Why is it believed that the endosymbiotic event that lead to the evolution of mitochondria happened before that for the evolution of chloroplasts?

Question

Accepted Answer

All eukaryotic cells contain mitochondria, whereas only plants and algae contain chloroplasts.

Answer

The mitochondria have been carbon dated to be older than chloroplasts.

Answer

A cell must have an organelle to convert sugars to ATP before it develops an organelle to convert sunlight to sugars.

Answer

Mitochondria are smaller than chloroplasts, so the engulfment of the prokaryotic ancestor of the mitrochondria would have occured more easily.

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