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Chapter 2 Notes

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Chapter 2 Notes Classification means organizing living things into groups based on their similarities. Scientists classify living and extinct organisms to make them ... – PowerPoint PPT presentation

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Title: Chapter 2 Notes


1
Chapter 2 Notes
2
  • Classification means organizing living things
    into groups based on their similarities.

3
  • Scientists classify
  • living and extinct organisms to make
  • them easier to study.

4
  • Organisms are classified by shared
    characteristics and their relationships between
    one another.

5
  • The levels of classification go from very general
    to very specific.

6
  • Domain Did
  • Kingdom King
  • Phylum Philip
  • Class The 8 levels Come
  • Order Over
  • Family From
  • Genus Great
  • Species Spain

7
  • The science of classifying organisms is called
    taxonomy.

8
  • Taxonomy was founded by Linneaus in the 1700s.
    He classified things only by their shared
    characteristics.

9
  • Modern taxonomists also look at evolutionary
    relationships between animals.

10
  • A branching diagram can show the relationships
    between organisms.

11
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12
  • Organisms that are more closely related are
    closer together on the branching diagram.

13
  • When living things are classified, they get a
    scientific name.
  • The scientific name is the same anywhere in the
    world.

14
  • Scientific names are usually Latin or Greek. The
    scientific name is always the genus and species
    name together.

15
  • The genus is always written first and
    capitalized. The species is second and is always
    lower case.

16
  • The scientific name is always italicized or
    underlined.
  • Ex. Felis domesticus

17
  • Scientists can use a dichotomous key to identify
    unknown organisms.
  • Pg.52

18
  • Scientists use 6 kingdoms.
  • Archaebacteria
  • Eubacteria
  • Protista
  • Plantae
  • Fungi
  • Animalia

19
  • Bacteria are prokaryotic, meaning they do not
    have nuclei.
  • All other living things are eukaryotic and have
    nuclei

20
  • Archaebacteria live in extreme environments (very
    hot or cold)
  • They have been on the earth for about 3 billion
    years.

21
  • Most bacteria are in kingdom Eubacteria.
  • They live in many places all over the earth and
    even inside other organisms.

22
  • Kingdom Protista consists of unicellular simple
    multicellular organisms.

23
  • Protista includes organisms that are not plants,
    animals or fungi

24
  • Kingdom Plantae Plants are usually green and make
    food by photosynthesis
  • They are complex, multicellular organisms

25
  • Kingdom Fungi They absorb food from their
    surroundings.
  • Fungi are usually multicellular (except yeast).

26
  • Kingdom Animalia Most move around and have
    nervous systems.
  • Animals are complex and multicellular.
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