There are both single celled and multicellular organisms found in this kingdom. Some protists are autotrophs that can make their own food and some are heterotrophs that can not make their own food and some are both autotroph and heterotroph.Animal-like Animal-like protists, also known as protozoans, are all heterotrophs that can move in their surroundings to find food.here are both single celled and multicellular organisms found in this kingdom. Some protists are autotrophs that can make their own food and some are heterotrophs that can not make their own food and some are both autotroph and heterotroph.