They move from unicellular to filamentous to colonial to multicellular.* ~Volvox~ ~Spirogyra~ ~Desmids~ ~Zygnema~ Phylum Chrysophyta *Organisms in this phyla are unicellular and can be marine or freshwater.
(They; are; unicellular) (They; can be; marine or freshwater)
They They
are can be
unicellular
marine or freshwater