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Classifying Living Things

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Classifying Living Things Classification Classification is the process of grouping things based on their shared traits. – PowerPoint PPT presentation

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Title: Classifying Living Things


1
Classifying Living Things
2
Classification
  • Classification is the process of grouping things
    based on their shared traits.
  • Biologists use classification to organize living
    things into groups, so that the organisms are
    easier to study
  • The scientific study of how living things are
    classified is called taxonomy.

3
Classification System
  • Carolus Linnaeus is the Swedish scientist who
    developed a classification system based on the
    organisms observable features.
  • Linnaeuss naming system is called binomial
    nomenclature because each organism is given a two
    part name.

4
Binomial Nomenclature
  • The first part of the organisms name is its
    genus. This is a classification grouping that
    contains similar, closely related organisms.
  • The second part of the organisms name is its
    species. A species is a group of similar
    organisms that can mate and produce fertile
    offspring.

5
Seven Levels of Classification
  • Todays classification system uses several levels
    to classify organisms. The more characteristics
    that organisms have in common, the more level
    they share.
  • Kingdom
  • Phylum
  • Class
  • Order
  • Family
  • Genus
  • Species

6
Dichotomous Keys
  • Taxonomist have developed special guides know as
    dichotomous keys to aid in identifying unknown
    organisms.
  • A dichotomous key consists of several pairs of
    descriptive statements that have only two
    responses.

7
Branching Diagrams
  • Branching diagrams show the close evolutionary
    relationships between organisms.
  • As characteristics differ, branches in the
    diagram form.

8
Cladograms
9
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10
5/6 Kingdoms of Organisms
  • Bacteria (Monera)
  • Archeabacteria
  • Eubacteria
  • Protists
  • Fungi
  • Plants
  • Animals
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