What are the cell types of protista?

Unicellular or microscopic organisms, but it also has relatively simple multicellular organisms. Most diverse eukaryotes, some are closer to other kingdoms than the others. Various shapes, with or without cell wall, flagella, amoeboid cells (phagocytic cells that alter their shapes) , simple or branched filaments or leaves, one or two layers or multinucleated masses without cell walls.