In the full game, almost all organelles are planned to be locked at first and require special actions to unlock. (from MP to mutate a flagellum into a pilus to the endosymbiosis where you need to engulf a special bacterium after which there’ll be a small chance to unlock the associated organelle, which is how you unlock the mitochondrium and chloroplast)
I however don’t know how the bacteria associated with the chloroplasts and mitochondria will work with the system of evolving bacteria.