Protozoa Colorless Motile distinguished from prokaryotes by their greater size and eukaryotic nature distinguished from algae by their greater lack of chlorophyll distinguished from yeasts and other fungi by their mobility and lack of cell wall distinguished from slime molds by their lack of fruiting body formation Many of them are parasitic in other animals and humanProtozoa Colorless Motile distinguished from prokaryotes by their greater size and eukaryotic nature distinguished from algae by their greater lack of chlorophyll distinguished from yeasts and other fungi by their mobility and lack of cell wall distinguished from slime molds by their lack of fruiting body formation Many of them are parasitic in other animals and human