A suffix is a letter or series of letters attached to the end of a word, word base, or prefix to produce a derivative word with a new meaning. There are many suffixes used by biologists in constructing scientific names and terminology.
Kingdom is the highest rank used in the biological taxonomy of all organisms. There are 6 kingdoms in taxonomy. Every living thing comes under one of these 6 kingdoms. The six kingdoms are Eubacteria, Archae, Protista, Fungi, Plantae, and Animalia. Until the 20th century, most biologists considered all living things to be classifiable as either a plant or an animal. But in the 1950s and 1960s, most biologists came to the realization that this system failed to accommodate the fungi, protists, and bacteria. By the 1970s, a system of Five Kingdoms had come to be accepted as the model by which all living things could be classified. At a more fundamental level, a distinction was made between the prokaryotic bacteria and the four eukaryotic kingdoms (plants, animals, fungi, & protists).
Kingdom Protista. Protists are a diverse group of eukaryotic microorganisms. This group includes mostly unicellular organisms but also has multicellular organisms that are without specialized tissues. Their simple cellular organization distinguishes them from other eukaryotes, such as plants, animals, and fungi.