Www.BioEdOnline.org Leucaena leucocephala Lead tree Classification Binomial Nomenclature Two part name (Genus, species) Hierarchical Classification Seven.

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Classification of Living Things

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Presentation transcript:

Leucaena leucocephala Lead tree Classification Binomial Nomenclature Two part name (Genus, species) Hierarchical Classification Seven Taxonomic Catagroies Systematics Study of the evolution of biological diversity BioEd Online

Carolus von Linnaeus ( ) Swedish scientist who laid the foundation for modern taxonomy Binomial Nomenclature Carolus von Linnaeus Two-word naming system Genus Noun, Capitalized, Underlined or Italicized Species Descriptive, Lower Case, Underlined or Italicized BioEd Online

Hierarchical Classification Taxonomic categories KingdomKing PhylumPhilip ClassCame OrderOver FamilyFor GenusGreen SpeciesSoup BioEd Online

Kingdoms and Domains BacteriaArchaeaEukarya BacteriaArchaeaProtistaPlantaeFungiAnimalia MoneraProtistaPlantaeFungiAnimalia The three-domain system The six-kingdom system The traditional five-kingdom system BioEd Online

Systematics: Evolutionary Classification of Organisms Systematics is the study of the evolution of biological diversity, and combines data from the following areas. Fossil record Comparative homologies Cladistics Comparative sequencing of DNA/RNA among organisms Molecular clocks BioEd Online

Taxonomic Diagrams MammalsTurtlesLizards and Snakes CrocodilesBirdsMammalsTurtlesLizards and Snakes CrocodilesBirds CladogramPhylogenetic Tree BioEd Online

Dichotomous Keys Identify Organisms Dichotomous keys versus evolutionary classification Dichotomous keys contain pairs of contrasting descriptions. After each description, the key directs the user to another pair of descriptions or identifies the organism. Example: 1.a) Is the leaf simple? Go to 2 b) Is the leaf compound? Go to 3 2.a) Are margins of the leaf jagged? Go to 4 b) Are margins of the leaf smooth? Go to 5 BioEd Online