Chapter 18 Complete Terms
Terms
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- domain
- in the three-domain system of classification, one of three broad groups that all living things fall into on the basis of rRNA analysis
- family
- in taxonomy, a group of related genera
- systematics
- systematic taxonomy; taxonomic organization of living things in the context of evolution
- domain Eukarya
- a group consisting of all protist, fungi, plants and aniamls
- cladistics
- a system of phylogenetic classification using shared derived characters and the recency of ancestry is the sole criterion for grouping taxa
- kingdom Archaebacteria
- group containing unicellular prokaryotes with distinctive cell membranes as well as genetic and biochemical properties that differ from all other kinds of life
- kingdom Fungi
- made up of heterotrophic unicellular and multicellular eukaryotic organisms that absorb rather than ingest nutrients
- derived character
- a feature that evolved only within the group under consideration, such as the feathers of birds
- order
- in taxonomy, a group of similar families
- kingdom Protista
- made up of a variety of eukaryotic, mostly single-celled organisms
- class
- in taxonomy, a group of related orders
- taxonomy
- the science of grouping organisms according to their presumed evolutionary relationships
- variety
- a further division or subset of species
- cladogram
- ancestry diagram made by means of cladistic analysis
- phylum
- in taxonomy, a group of similar classes
- species identifier
- the second part of a species name; humans are known by genus name Homo and by species identifier sapiens; specific epithet
- domain Bacteria
- known in the six kingdom system as kingdom Eubacteria
- kingdom Plantae
- made up of all multicellular plants
- phylogenetic tree
- a family tree that shows the evolutionary relationships thought to exist among groups of organisms
- kingdom
- in taxonomy, a group of similar phyla or divisions
- subspecies
- varieties of animal species that occur in different geographical areas
- genus
- in taxonomy, a group of similar species
- blastula
- a hollow ball of cells formed when a zygote undergoes repeated cycles of cell division
- echinoderm
- a radially symmetrical marine invertebrate with an endoskeleton, a water-vascular system and tube feet
- kingdom Eubacteria
- made up of unicellular prokaryotes
- domain Archaea
- known in the six kingdom system as kingdom Archaebacteria
- blastopore
- a depression formed when cells of the blastula move inward
- kingdom Animalia
- made up of eukaryotic, multicellular heterotrophic organisms
- division
- in taxonomy, a grouping of similar classes of plants
- species
- a group of organisms of a single type that are capable of producing fertile offspring in the natural environment
- phylogeny
- the evolutionary history of a species or taxonomic group
- species name
- the two-part scientific name of a species composed of the genus and the species identifier
- protist
- members of the kingdom Protista
- binomial nomenclature
- a system of naming organisms that uses the genus name and a species identifier