A protist or protoctist is any eukaryotic organism that is not an animal, land plant, or fungus. Protists do not form a natural group, or clade, but are a paraphyletic group encompassing the entire eu

Diaphoretickes is a major evolutionary lineage, or clade, of eukaryotic organisms spanning over 600,000 species. They comprise an enormous diversity of life forms, from single-celled protozoa to multi