classification Flashcards
Classification
any observable feature, or trait, of an organism, whether acquired or inherited.
taxonomy
is the science of defining and naming groups of biological organisms on the basis of shared characteristics.
Binomial nomenclature
a system of nomenclature in which each species of animal or plant receives a name of two terms of which the first identifies the genus to which it belongs and the second the species itself.
taxon
a taxonomic group of any rank, such as a species, family, or class.
genus
A taxonomic category ranking used in biological classification that is below a family and above a species level.
family
A taxonomic rank in the classification of organisms between genus and order.
order
a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes.
Class
a principal taxonomic grouping that ranks above order and below phylum or division
phylum
a principal taxonomic category that ranks above class and below kingdom.
Division
any subsidiary category between major levels of classification.
kingdom
the highest category in taxonomic classification.
phylogeny
the branch of biology that deals with phylogenesis.
Characters
a characteristic, especially one that assists in the identification of a species.
Domain
superkingdom or empire, is the highest taxonomic rank of organisms in the three-domain system of taxonomy designed by Carl Woese
molecular clock
the average rate at which a species’ genome accumulates mutations, used to measure their evolutionary divergence and in other calculations.
Cladistics
a method of classification of animals and plants according to the proportion of measurable characteristics that they have in common.
Cladogram
a branching diagram showing the cladistic relationship between a number of species.
archaea
Any of the unicellular microorganisms that is genetically distinct from bacteria and eukaryotes.
Protists
Any of a group of eukaryotic organisms belonging to the Kingdom Protista.
Fungus
any of a large division of thallophytes, including molds, mildews, mushrooms, rusts, and smuts, that are parasites on living organisms or that feed upon dead organic material.