The Tree of Life - PowerPoint PPT Presentation

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The Tree of Life

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Title: Chapter 18 Classification Author: Kelso Last modified by: Craig Kelso Created Date: 4/21/2004 4:48:58 AM Document presentation format: On-screen Show (4:3) – PowerPoint PPT presentation

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Tags: carolus | life | linnaeus | tree

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Title: The Tree of Life


1
The Tree of Life
  • Finding Order In Diversity

2
Why Classify?
  • Cougar
  • Puma
  • Mountain Lion
  • Panther
  • and thats just
  • in english
  • What is this?

How About Felis concolor In ALL Languages
3
Key Concept
  • To study the diversity of life
  • biologists use a classification system
  • to name organisms and group organisms
  • in a logical manner
  • that ALL biologists understand
  • regardless of their native language.

4
TAXONOMY
  • The scientific discipline
  • of classifying
  • and assigning organisms a universally accepted
    name.

5
Assigning Scientific Names
  • Uses Latin or Greek
  • Early efforts resulted in long, controversial
    names e.g.

6
Assigning Scientific Names
  • Oak with deeply divided leaves that have no hairs
    on their undersides and no teeth around their
    edges.

7
Assigning Scientific Names
  • Resolved in late 1700s when
  • Carolus Linnaeus
  • developed the current system of
  • Binomial Nomenclature

8
Carolus Linnaeus
  • 1707 1778

9
Binomial Nomenclature
  • Every Living Organism Is Defined By Two
    Italicized Words
  • Genus and species

SpeciesWhich is always in lower case
GenusWhich is capitalized
10
Binomial Nomenclature
11
Linnaeuss System of Nomenclature
  • Key Concept
  • Linnaeuss system of classificationuses seven
    (7) taxonomic categories.
  • Taxon Each Group or Level of Organization

12
Linnaeuss System of Nomenclature
  • Kings play chess on fine grained sand.
  • Kingdom
  • Phylum
  • Class
  • Order
  • Family
  • Genus
  • species

13
  • Kings
  • Play
  • Chess
  • On
  • Fine
  • Grain
  • Sand
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