Classification Notes

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Classification Notes
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Classification- the process of grouping things
based on similarities. Taxonomy- the science of
classification Aristotle
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Carolus Linneaeus- Swede, designed modern system
of classification, known as binomial nomenclature
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Binomial Nomenclature -Scientific Name, use
italics -First word (Genus) capitalized, -often
latin -used worldwide
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Genus- first word in scientific name -group of
similar organisms Species- second word in
scientific name -describes a distinctive feature
of an organism
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Levels of classification Did King Phillip Come
Over For Good Sushi? Domain Kingdom Phylum Class
Order Family Genus Species
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Taxonomic (Dichotomous) Key- lists choices that
lead to the correct identity of an
organism. Evolution- process by which species
gradually change over time Organisms with a
common ancestor are classified together.
Ancestry can be determined using DNA
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• Domain- based on cell type
• 3 Domains
• Domain Bacteria- cells lack nuclei (Prokaryotes)
• Domain Archaea- also prokaryotes but differ
  chemically from Bacteria
• Domain Eukarya- cells have nuclei

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Heterotrophic- obtains energy from
others Autotrophic- obtains energy from sun
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Four Kingdoms Protista- unicellular, autotrophic
or heterotrophic
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Fungi- multicellular, heterotrophic
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Plantae- multicellular, autotrophic
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Animalia- multicellular, heterotrophic
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Field Guides

• Field guides help to identify an organism by
  providing
• Photos
• Written description

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