Because chloroplasts weigh a lot (compared to other organelles), so therefore if a creature would want to make use of them, they would weigh a lot and because of that not be able to move very fast (I think, might’ve misheard something)
Because chloroplasts weigh a lot (compared to other organelles), so therefore if a creature would want to make use of them, they would weigh a lot and because of that not be able to move very fast (I think, might’ve misheard something)