Animalia 1 (BIO LAB)

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Author:
amerelman
ID:
297938
Filename:
Animalia 1 (BIO LAB)
Updated:
2015-03-09 03:00:04
Tags:
animalia
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Description:
animalia
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  1. Symmetry
    • Radial
    • Bilateral
    • Asymmetrical
  2. Acoelomate
    No body cavity
  3. Pseudocoelomate
    • Body cavity develops between mesoderm and endoderm
    • Not a true coelomate
  4. Coelomate
    Body cavity entirely within the mesoderm
  5. Protosome
    • Spiral cleavage
    • Determinate cleavage
    • Blastospore develops into mouth
    • Second opening later turns into anus
    • Schizocoelous coelom formation
    • Ex. Mollusks, Annelids, Athropods
  6. Deuterostomes
    • Radial cleavage
    • Indeterminate cleavage
    • Blastospore develops into anus
    • Second opening turns into mouth
    • Entercoeleous coelum formation
    • Ex. Echinoderms, Chordates
  7. Phylum Porifera
    • Sponges
    • Osculum-Large opening/pore
    • Centra cavity
    • Collar cells-resembles protist with single flagellum
    • Intracellular digestion
    • Loost aggregate of cells
    • Scypha-sponges
  8. Phylum Cnideria
    • Most marine, some freshwater
    • Tissue grade level of organization
    • Two tissue layers
    • Single digestive opening
    • Radial symmetry
    • 2 body types
    • -polyp
    • -medusae-jellyfish
    • Class hydrozoa (hydras), scyphozoa (jellyfish), anthozoa (sea anemones)
  9. Phylum Playhelminthes
    • Class Turbellaria
    • Free living flatworms-not parasitic
    • Bilateral symmetry
    • Acoelamate
    • Single opening digestion
    • Example: Dugesia
  10. Phylum Playhelminthes
    • Class Cestoda
    • Possess a scolex armed with suckers and hooks
    • Posterior of scolex is a long ribbon of units called proglottids
    • -Reproductive
    • No digestive system
    • Includes intermediate hosts (vertebrates)
    • Example: tapeworms
  11. Phylum Nematoda
    • Roundworms
    • Parasite of mammals
    • Bilateral symmetry
    • Pseudocoelomate
    • Tubular digestive tract
    • Example: Ascaris
  12. Phylum Annelida
    • Coelomate
    • Tubular digestion
    • Closed circulatory system
    • Bilateral symmetry
    • Three classes...
  13. Class Oligochaeta
    • Annelid
    • Lives in soil
    • Earthworms
  14. Class Polychaeta
    • Annelida
    • Marine
    • Clamworm
  15. Class Hirudinea
    • Annelida
    • Freshwater
    • Carnivores
    • Leeches

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