Answer: True
Protists are a diverse group of organisms that can exist as single-celled entities, like amoebas and paramecia, or as multicellular forms, such as algae. This group encompasses various types of life forms that do not fit neatly into the categories of plants, animals, or fungi. For instance, while many algae are multicellular, other protists, like certain types of euglena and diatoms, are unicellular. The classification of protists highlights the incredible diversity of life forms, demonstrating that they can adapt to a wide range of environments in both single and multicellular forms.