In biology, kingdom (Latin: regnum, pl. regna) is the second highest taxonomic rank below domain. Kingdoms are divided into smaller groups called phyla. Traditionally, textbooks from the United States used a system of six kingdoms.
A fungus (/ˈfʌŋɡəs/; plural: fungi[3] or funguses[4]) is any member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds(British English: moulds), as well as the more familiar mushrooms. These organisms are classified as a kingdom, Fungi, which is separate from plants, animals,protists, and bacteria. One major difference is that fungal cells have cell walls that contain chitin, unlike the cell walls of plants and some protists, which containcellulose, and unlike the cell walls of bacteria. These and other differences show that the fungi form a single group of related organisms, named the Eumycota (true fungi or Eumycetes), that share a common ancestor (is a monophyletic group). This fungal group is distinct from the structurally similar myxomycetes (slime molds) andoomycetes (water molds). The discipline of biology devoted to the study of fungi is known as mycology (from the Greek μύκης, mukēs, meaning "fungus"). Mycology has often been regarded as a branch of botany, even though it is a separate kingdom in biological taxonomy. Genetic studies have shown that fungi are more closely related to animals than to plants.
Animals are multicellular, eukaryotic organisms of the kingdom Animalia. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their lives. Animal or the kingdom Animalia, a classification of living organisms.
In some biological taxonomy schemes, protists (/ˈproʊtɨst/) are