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Annelida. Alec Demitrus Owen Smith. Phylum Classes. Oligochaeta (Earthworms) Polychaeta (Marine worms) Hirudinea (Leeches). Habitat and Species. Ocean Freshwater Habitat Damp Soil 12,000 known species. External Anatomy . Internal Anatomy . Symmetry and Skeleton.

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annelida

Annelida

Alec Demitrus

Owen Smith

phylum classes
Phylum Classes
  • Oligochaeta
    • (Earthworms)
  • Polychaeta
    • (Marine worms)
  • Hirudinea
    • (Leeches)
habitat and species
Habitat and Species
  • Ocean
  • Freshwater Habitat
  • Damp Soil
  • 12,000 known species
symmetry and skeleton
Symmetry and Skeleton
  • Earthworms have bilateral symmetry.
  • Earthworms are invertebrates.
life cycle and distinguishing features
Life Cycle and Distinguishing Features
  • Hermaphrodites that lay cocoons that produce mini adults
    • Features include:
      • No obvious appendages
      • No antennas
      • Generally no difference in head or tail
      • Cylindrical bodies
      • Reduced head
facts importance and conservations status
Facts/Importance and Conservations Status
  • Earthworms don’t have lungs, they breath through their skin & can live under water for a while.
  • Leeches they are use in medical studies to remove blood cloaks
bibliography
Bibliography
  • http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/I/Invertebrates.html
  • http://www.ento.csiro.au/education/allies/annelida.html
  • http://en.wikipedia.org/wiki/Annelid#Reproduction_and_life_cycle
  • http://en.wikipedia.org/wiki/Polychaete
  • Campbell, Neil. Biology, 8th edition. AP Edition ed. San Francisco: Pearson, 2008. Print.
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