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Classification kingdom containing complex multicellular organisms


prokaryotes (most of which are known to live in extreme environments)


kingdom made up of prokaryotes (most of which are known to live in extreme environments) that are distinuished from other prokaryotes


in a modern taxonomic system, a domain made up of prokaryotes that usually have a cell wall and that usually reproduce

binomial nominclature

system for giving each organism a two word name


the variety of organisms in a given area, the genetic variation within a population


taxonomic grouping that includes only a single ancestor


phylogenetic classification system that uses shared derived characters


diagram that is based on patterns of shared derived traits


taxonomic category containing orders with common characteistics

derived character

feature that evolved only within a toxonomic group


-in taxonomy, a grouping of similar classes of plants


in a taxonomic system based on rRNA analysis, one of the three broad groups that all living things fall into


1. in a traditional taxonomic system, a kingdom made up of all prokaryotes except members of the kingdom Archaebacteria; currently, biologists prefer to classify members of this kingdom into the domain Bacteria


in a modern taxonomic system, a domain made up of all eukaryotes; this domain aligns with the traditional kingdoms Protista, Fungi, Plantae, and Animalia


the taxonomic category below the order and above the genus


classification kingdom made up of nongreen, eukaryotic organisms that get food by breaking down organic matter and absorbing the nutrients, reproduce by means of spores, and have no means of movement


the level of classification that comes after family and that contains similar species


the highest taxonomic category, which contains a group of similar phyla


the taxonomic category below the class and above the family

phylogenetic diagram

branching diagram that models the relationships by ancestry between different species or other taxonomic groups


the analysis of evolutionary, or ancestral, relationships between taxa


-the taxonomic group below kingdom and above class


classification kingdom made up of eukaryotic, multicellular organisms that have cell walls made mostly of cellulose, that have pigments that absorb light, and that supply energy and oxygen to themselves and to other life-forms through photosynthesis


mostly one-celled eukaryotic organisms that are different from plants, animals, and fungi

speial character

feature that is shared by all members of a particular group of organisms


group of organisms that are closely related and can mate to produce fertile offspring; also the level of classification below genus and above subspecies

sub species

- taxonomic classification below species that groups organisms that live in different geographical areas, differ morphologically from other populations of the species, but can interbreed with other populations of the species


the classification of living organisms in terms of their natural relationships; it includes describing, naming, and classifying the organisms


any particular group within a taxonomic system


the science of describing, naming, and classifying organisms

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