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Moss/Rowlands Chapter 18
Classification
24
Biology
10th Grade
08/28/2014

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Term
Taxonomy
Definition
Classify organisms and assign each organism and assign each organism a universally accepted name
Term
Binomial Nomenclature
Definition
Classification system in which each species is assigned a two-part siecntific name
Term
Genus
Definition
Group of closely related species, and the first part of the scientific name in binomial nomenclature.
Term
Taxon
Definition
Group of level of organization into which organism are classified.
Term
Family
Definition
A group of genera that share many characteristics.
Term
Order
Definition
Broad taxonomic category composed of similar families.
Term
Class
Definition
Group of similar orders.
Term
Phylum
Definition
Group of closely related classes.
Term
Kingdom
Definition
Large taxonomic group, consisting of closely related phyla.
Term
Phylogeny
Definition
Study of evolutionary relationships among organisms.
Term
Evolutionary Classification
Definition
Method of grouping organisms together according to their evolutionary history.
Term
Derived Characters
Definition
Characteristic that appears in recent parts of a lineage, but not in its order members.
Term
Cladogram
Definition
Diagram that shows the evolutionary relationships among a group of organism.
Term
Molecular Clock
Definition
Model that used DNA comparisons to estimate the length of time that two species have been evolving. independently.
Term
Domain
Definition
Most inclusive taxonomic category; larger than a kingdom.
Term
Bacteria
Definition
Domain of unicellular prokaryotes that have cell walls containing peptidoglycan.
Term
Eubacteria
Definition
Kingdom of unicellular prokaryotes whose cell walls are made up of pepidoglycan.
Term
Archaea
Definition
Domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.
Term
Archaebacteria
Definition
Kingdom of unicellular prokaryotes whose cell walls do not contain peptidoglycan.
Term
Eukarya
Definition
Domain of all organisms whose cells have nuclei, including protists, plants, fungi,, and animals.
Term
Prostista
Definition
Kingdom composed of eukaryotes that are not classified as plants, animals, or fungi.
Term
Fungi
Definition
Kingdom composed of heterotrophs; many obtain energy and nutrients from dead organic matter.
Term
Plantae
Definition
Kingdom of milticellular photosynthetic autotrophs that have cell walls containing cellulose.
Term
Animalia
Definition
Kingdom of multicellular eukaryotic heterotrophs whose cells do not have cell walls.
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