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Title:

Classification

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Chapter 1, Section 4 Classification Grouping of similar objects Brief History More than 2,000 years ago, Aristotle grouped organisms into plants and animals In late ... – PowerPoint PPT presentation

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Title: Classification


1
Classification
  • Chapter 1, Section 4

2
Classification
  • Classification
  • Grouping of similar objects

3
Classification
  • Brief History
  • More than 2,000 years ago, Aristotle grouped
    organisms into plants and animals
  • In late 18th century, Linnaeus developed a system
    of classification based on similar structures

4
Classification
  • Modern Classification
  • Based on phylogeny
  • Phylogeny is the evolutionary history of an
    organism
  • Phylogeny is determined by looking at
    similarities in
  • structure
  • fossils
  • hereditary information
  • early stages of development

5
Classification
  • Modern Classification
  • Organisms are grouped into six kingdoms
  • Animals
  • Plants
  • Protists
  • Fungi
  • Archaebacteria
  • Eubacteria
  • Some systems break organisms into three domains
    before they are broken into kingdoms

6
Classification
  • Modern Classification
  • Kingdom Kids
  • Phylum Playing
  • Class Catch
  • Order On
  • Family Freeways
  • Genus Get
  • Species Smooshed
  • Organisms of the same species can mate and
    produce fertile offspring

7
Scientific Names
  • Binomial Nomenclature
  • 2 word system of naming organisms
  • Developed by Linneaus
  • First word identifies genus
  • A genus is a group of similar species
  • Second word identifies something about the
    organism
  • Called the specific epithet

8
Scientific Names
  • Why use scientific names?
  • Helps avoid mistakes
  • Groups organisms with similar evolutionary
    histories together
  • Gives descriptive information about the species
  • Allows information about the organism to be
    shared easily and efficiently

9
Tools for Identifying Organisms
  • Dichotomous Key
  • Detailed list of characteristics used to identify
    organisms
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