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Annelida

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

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  1. Annelida Alec Demitrus Owen Smith

  2. Phylum Classes • Oligochaeta • (Earthworms) • Polychaeta • (Marine worms) • Hirudinea • (Leeches)

  3. Habitat and Species • Ocean • Freshwater Habitat • Damp Soil • 12,000 known species

  4. External Anatomy

  5. Internal Anatomy

  6. Symmetry and Skeleton • Earthworms have bilateral symmetry. • Earthworms are invertebrates.

  7. 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

  8. 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

  9. 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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