Kingdom Protista includes all the unicellular eukaryotes. They are primarily aquatic organisms. They include both autotrophs as well as heterotrophs.
Gonyaulax, Euglena, Amoeba and Pinnularia all belong to the kingdom of Protista; all are unicellular and eukaryotic organisms.
Holozoic nutrition (heterotrophic mode of nutrition) is seen in Amoeba.
Gonyaulax and Pinnularia are photosynthetic and hence are autotrophic.
Euglena has photosynthetic pigments and performs photosynthesis in the presence of sunlight. However, it is heterotrophic in the absence of sunlight.