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Phylum Annelida

Phylum Annelida. By: Amal , Kasia , Jess, Erin. Fun Facts. Annelida means “little rings” Refers to the segmented bodies of the creatures in this phylum Annelida can be divided into 3 classes Oligochaeta Polycheata Hirudinea. Stuff You Want To Know.

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Phylum Annelida

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  1. PhylumAnnelida By: Amal, Kasia, Jess, Erin

  2. Fun Facts • Annelida means “little rings” • Refers to the segmented bodies of the creatures in this phylum • Annelida can be divided into 3 classes • Oligochaeta • Polycheata • Hirudinea

  3. Stuff You Want To Know A list and an explanation of the things on your chart pertaining to Phylum Annelida.

  4. Germ Layers Tripoblastic Produces a mesoderm, the middle layer, that is composed of muscles and organs.

  5. Symmetry Bilateral Has an anterior (head), posterior (tail), and left and right sides.

  6. Coelom Coelomates Has a fluid or air-filled body cavity separating the digestive track from the rest of the body.

  7. Digestive Track Tubelike Has two openings (front & rear).

  8. Cephalization Cephilization When sensory organs and the central nervous system are all collected in the head region.

  9. Segmentation Segmentation The subdivision of an organism or of an organ into more or less equivalent parts.

  10. Skeleton and Appendages Hydrostatic Skeleton Fluid filled cavity that is used to support the body of the organism.

  11. Circulatory System Closed with Hemoglobin The blood is contained in blood vessels and turns red when exposed to oxygen.

  12. Respiratory System Spiracles They breath through their skin.

  13. Reproduction Hermaphrodites Worms exchange sperm during mating.

  14. Habitat Dark and Wet They like live in damp soil, freshwater, and marine.

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