Objectives SWBAT Explain how living things are organized for study.
Key Points 1. To Study the diversity of life, biologists use a classification system to name organisms and group them in a logical manner. 2. In binomial nomenclature, each species is assigned a two part scientific name. 3. Linnaeus's Hierarchical system of classification includes 7 levels. They are from smallest to largest and include species, genus, family, order, class, phylum, kingdom.
Major Vocabulary Taxonomy : discipline of classifying organisms and assigning each organism a universally accepted name. Binomial Nomenclature : classification system in which each species is assigned a 2 part scientific name. Taxon : group or level of organization into which organisms can be classified.
Why do we classify??? When you think of a fish, what characteristics do you think of??? Fins Gills Streamline shape Bones Biologists needed to attempt to give order to the vast number of organisms on earth. This is called Taxonomy.
Scientific Names There is a problem with only naming organisms by their common names. What is the name of this organism? Cougar Puma Panther Mountain Lion Why is this a problem???
Binomial Nomenclature Common Name : Grizzly Bear Scientific Name : Ursus arctos Rule for Binomial Nomenclature: First name: Genus and is always Capitalized. Second name: Species and is not capitalized.
Binomial Nomenclature Common Name : Grizzly Bear Scientific Name : Ursus arctos Common Name : Polar Bear Scientific Name : Ursus maritimus Do Ursus arctos and Ursus maritimus belong to the same species or same genus? Which group, genus or species is most inclusive?
Linnaeus’s System of Classification Organisms are grouped by more than 2 name. Every organisms actually has 7 names!!! Each name represents a different level of organization, or taxon.
Linnaeus’s System of Classification Species Genus Family Order Class Phylum Kingdom Most inclusive Least inclusive Remember it by... King Phillip Came Over For Good Soup