Which of the following is not true of protists?
A "protist" is broadly recognized as a eukaryote that is not an animal, fungus, or plant
Protists are diverse in part due to endosymbiosis, a process by which small, unicellular organisms are engulfed by larger unicellular organisms and eventually evolve to become organelles
Malaria, red algae, green algae, and dinoflagellates are all examples of protists
All protists are unicellular by definition