A unicellular, eukaryotic organism has flagella and cell walls of chitin. What is it?

Photosynthetic, eukaryotic organism ... and flagella. - most algal cell walls contain cellulose - both sexual and asexual - range from tiny unicellular, microscopic organisms to large multicellular, plantlike ... Fungi cell walls contain chitin instead of cellulose which I snot found in the cell walls of any other microorganism.