Classification.

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Presentation transcript:

Classification

Classification The arrangement of organisms into orderly groups based on their similarities

Taxonomy The study of classification and organization of life forms Carolus Linnaeus - today

Why Classify? Many different species Easier for scientists How many species? Characteristics? Relationships between species?

Levels of Classification Kingdom Phylum Class Order Family Genus Species

Mnemonic Device King Philip Came Over for Grape Soda

Taxonomy Kingdom – wide variety Species – very specific

Species Specific scientific name Genus (Capitalized) Underline or Italicize Genus (Capitalized) Specific epithet (lower case) Example Human – Homo sapiens Cat – Felis domestica

Naming Species Latin or Greek origins Meanings describe the organism Example: Tyrannosaurus rex Tyranno – tyrant Saurus – lizard Rex - king

Why Scientific Names are Important. . . Many common names = 1 species Example = rabbit Bunny Cottontail Hares Scientific name = Oryctolagus cuniculus

Cladograms & Dichotomous Keys

Cladistics is classification based on common ancestry. Phylogeny is the evolutionary history for a group of species. evidence from living species, fossil record, and molecular data shown with branching tree diagrams

Convert the Venn Diagram into a Cladogram Lizard Trout Human Earthworm Hair Legs Vertebrae

Using Observable Characteristics to Identify Objects Dichotomous Key Using Observable Characteristics to Identify Objects