They are heterotrophic, but there are a few members that can photosynthesize in addition to eating, such as Dinobryon.
Amoebae
protozoan (a unicellular heterotrophic protist, such as an amoeba or a ciliate)
The volvox is autotrophic..
Juvenile fish and crustaceans-other protozoans (Amoebas and cilates)