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Organizing Life

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Classification Classification CLASSIFICATION is a manmade system for ... The Six Kingdoms Organizing life in infinite varieties Kingdom Eubacteria True bacteria ... – PowerPoint PPT presentation

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Title: Organizing Life


1
Organizing Life
  • Classification, Taxonomy Dichotomous Key
  • A brief review..

2
Classification
3
Classification
  • CLASSIFICATION is a manmade system for grouping
    living organisms with similar characteristics.
  • TAXONOMY is the branch of biology that assigns
    names to all the various living organisms.

4
Binomial Nomenclature
Carolus Linnaeus (1707-1778) developed the system
which gives a two part scientific name to each
kind of organism.
Rana pipiens or Rana pipiens
5
Binomial Nomenclature
  • Linnaeuss system that gives each organism two
    names
  • -First word genus always capitalized
  • -Second word species lowercase
  • -Both words are italicized or underlined
  • -Example Homo sapiens (humans) if you were
    writing the name you would underline the words
    Homo sapiens

6
Binomial Nomenclature
  • Scientists agreed to use a single name for each
    species. Because eighteenth-century scientists
    understood Latin and Greek, they used those
    languages for scientific names.
  • Genus (first word) a group of closely related
    species
  • Species (second word) unique to each species
    within the genus

7
Taxonomy
  • Categories of organisms are referred to as Taxon
    or TAXA. !

8
Dichotomous Key
  • special guides to help identify organisms.
  • consists of several pairs of descriptive
    statements

9
CLASSIFICATION
  • Linnaeuss system of classification includes
    seven levels.
  • Listed from largest to smallest

10
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11
Classification
  • Biologists place living things in the
    classification system based on phylogeny
    (evolutionary relationships, structure,
    development, biochemistry, and behavior.

12
The Six Kingdoms
  • Organizing life in infinite varieties

13
Kingdom Eubacteria
  • True bacteria prokaryotic, microscopic,
    unicellular
  • more than 10,000 species identified

14
Kingdom Archaebacteria
  • Ancient bacteria found in extreme environments
    like salt lakes, deep ocean vents and geysers.
  • Unicellular
  • Prokaryotic live in the absence of oxygen

15
Kingdom Protista
  • Unicellular multicellular
  • some plantlike some animallike, but are not
    plants, animals or fungi
  • Eukaryote that lacks complex organ systems
  • Amoeba, Paramecium, slime molds, giant kelp

16
Kingdom Protista
  • No single trait is unique to protist
  • Protists can be autotrophs or heterotrophs, and a
    few can switch between modes
  • Some single-celled protists can develop into a
    nonmotile, dormant cyst during hard times

17
Kingdom Fungi
  • Decomposers
  • Unicellular or multicellular
  • eukaryotic
  • Heterotrophic
  • Mushrooms, yeast

18
Kingdom Plantae
  • Multicellular oxygen producers
  • stationary eukaryotes
  • most have cellulose cell walls
  • Chloroplasts
  • Mosses, ferns, flowering plants

19
Kingdom Animalia
  • Multicellular consumers most able to move
  • no cell walls
  • most have specialized tissues organs
  • Eukaryotic
  • Sponges, worms, insects, fishes, mammals
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