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  2. Biological organisation - Wikipedia

    en.wikipedia.org/wiki/Biological_organisation

    Biological organisation is the organisation of complex biological structures and systems that define life using a reductionistic approach. [1] The traditional hierarchy, as detailed below, extends from atoms to biospheres. The higher levels of this scheme are often referred to as an ecological organisation concept, or as the field, hierarchical ...

  3. Taxonomic rank - Wikipedia

    en.wikipedia.org/wiki/Taxonomic_rank

    In biology, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system of biological classification ( taxonomy) consists of species, genus, family, order, class, phylum, kingdom, and domain. While older approaches to taxonomic classification were phenomenological, forming ...

  4. Dominance hierarchy - Wikipedia

    en.wikipedia.org/wiki/Dominance_hierarchy

    Dominance hierarchy. A high-ranking male mandrill advertises his status with bright facial coloration. [1] In the zoological field of ethology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social groups interact, creating a ranking system.

  5. Order (biology) - Wikipedia

    en.wikipedia.org/wiki/Order_(biology)

    Order ( Latin: ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added ...

  6. Phylum - Wikipedia

    en.wikipedia.org/wiki/Phylum

    The hierarchy of biological classification's eight major taxonomic ranks.A kingdom contains one or more phyla. Intermediate minor rankings are not shown. In biology, a phylum (/ ˈ f aɪ l əm /; pl.: phyla) is a level of classification or taxonomic rank below kingdom and above class.

  7. Species - Wikipedia

    en.wikipedia.org/wiki/Species

    The hierarchy of biological classification's eight major taxonomic ranks. A genus contains one or more species. Minor intermediate ranks are not shown. A species (pl.: species) is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction.

  8. Linnaean taxonomy - Wikipedia

    en.wikipedia.org/wiki/Linnaean_taxonomy

    Linnaean taxonomy. Linnaean taxonomy can mean either of two related concepts: The particular form of biological classification (taxonomy) set up by Carl Linnaeus, as set forth in his Systema Naturae (1735) and subsequent works. In the taxonomy of Linnaeus there are three kingdoms, divided into classes, and the classes divided into lower ranks ...

  9. Genus - Wikipedia

    en.wikipedia.org/wiki/Genus

    The hierarchy of biological classification's eight major taxonomic ranks.A family contains one or more genera. Intermediate minor rankings are not shown. Genus (/ ˈ dʒ iː n ə s / pl.: genera / ˈ dʒ ɛ n ər ə /) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses.