How are protists described?
An organism that is something but we can't classify it.
For example, we describe a fungus as, for example, Mucor. We know that it has a cell wall made of Chitin and its storage carbohydrate. We then call this a fungus. However, the protist Amoeba behaves like an animal cell but it kind of isn't. Like Plasmodium that causes malaria, that is a protist as well. They can be pathogenic as well.