ABSTRACT
In the past the eukaryotic photosynthetic and nonphotosynthetic microorganisms were divided into form groups, the algae and the protozoa, based on the presence or absence of chloroplasts.
In the past the eukaryotic photosynthetic and nonphotosynthetic microorganisms were divided into form groups, the algae and the protozoa, based on the presence or absence of chloroplasts.