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Chapter 18: Classification

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Taxonomy
the branch of biology that names and groups organisms according to their characteristics and evolutionary history
Kingdom
Linnaeus's largest category. The two are animal and plant
Phylum
subset of a kingdom, in the animal kingdom
Division
subset of a kingdom, in the plant kingdom
Class
a subset of a phylum or division
Order
each subset within a class
Family
subset of an order
Genus
subset of a family
Species
the smallest grouping, contains only a single organism type
Species name
also called the scientific name; has 2 parts
Species identifier
the second part, usually a descriptive word
Binomial nomenclature
the system of two-part names
Varieties
further division of a subset of a species
Subspecies
varieties of animal species that occur in different geographical areas
Phylogeny
evolutionary history of an organism