chlorella have croloplast and have crolophyll why it lives parasite in other animals?

Question

chlorella is a green algae and it have crolop[hyll and whay it lives in oter small animals

Answer 1

I'm not sure where you got this from, but Chlorella can live on its own. If you are referring to lichens, that's more of a symbiotic relationship than it is parasitic.