How protozoans different from chromists?

Protozoans and chromists differ primarily in their cellular structure and classification. Protozoans are unicellular eukaryotic organisms that primarily exhibit animal-like characteristics, often being motile and heterotrophic. In contrast, chromists, which include organisms like diatoms and brown algae, are also eukaryotic but are typically photosynthetic and include a variety of forms, some of which are multicellular. Additionally, chromists possess chlorophyll c and exhibit different types of plastids compared to protozoans.