Be Able To Explain How or Why:

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Presentation transcript:

Be Able To Explain How or Why: Chapter 17 The Tree of Life Section 17-1 The Linnaean System of Classification Be Able To Explain How or Why: Linaeus developed the scientific naming system still used today. Linnaeus’ classification system has seven levels. The Linnaean classification system has limitations. Key terms: taxonomy, taxon, binomial nomenclature, genus, species.

Taxonomy Taxonomy is the science of naming and classifying organisms. In the 1750’s Swedish botanist Carolus Linnaeus developed a system to classify organisms.

Scientific Names A taxon is group or level within the Linnaean system of classification that is organized into a hierarchical order (general to specific). Binomial nomenclature is a system that gives each species a two part name using Latin words.

Scientific Names Genus is the first name in binomial nomenclature. First letter of genus is CAPITALIZED First letter of species is lower case Scientific names are underlined or written in italics The ground pangolin or Manis temminckii

Linnaeus’ Classification System Linneaus’s classification system uses 7 levels or taxa. The top level represents all species of a group or Kingdom. The lowest level is the species. His system did not use the evidence that we have today.

Seven Levels of Classification Kingdom Phylum Class Order Family Genus Species King Phillip Came Over For Great Spaghetti

Limitations to the Linnaean Classification System It only focuses on physical similarities He did not know how to use research techniques to find genetic similarities He did not examine creatures on the molecular level