Marine invertebrates

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Marine invertebrates

  1. 1. Meet the Lower Invertebrates Kingdom-Animalia
  2. 2. Major Invertebrate Phyla1) Phylum Porifera2) Phylum Ctenophora3) Phylum Cnidaria4) Phylum Platyhelminthes5) Phylum Annelida6) Phylum Mollusca7) Phylum Echinodermata8) Phylum Arthropoda
  3. 3. Symmetry
  4. 4. 1) Phylum Porifera -Example: Sponges -Named for many pores -No symmetry (asymmetrical) -Most primitive (simple) animals – no organs
  5. 5. 2) Phylum Ctenophora-Example: Comb jellies-Radial symmetry-Harmless bioluminescentjellies
  6. 6. 3) Phylum Cnidaria-Jellyfish (AKA Sea Jellies), seaanemones, and corals-Members of this group havestinging cells-Radially symmetrical-2 tissue layers-No organs
  7. 7. 4) Phylum Platyhelminthes-TheFlatworms-Bilateralsymmetry-Simple
  8. 8. 5) Phylum Annelida-The Segmented Worms-Examples-Polychaetes(and Earthworms onland)-Bilateral Symmetry-Advanced worms
  9. 9. 6) Phylum Mollusca-Examples: Clams, snails, octopus, squid-Soft bodied animals with a large “foot”-Bilateral symmetry
  10. 10. 7) Phylum Arthropoda-Examples: Crabs,lobsters, barnacles,insects, arachnids-Exoskeleton-Jointed or hingedappendages-Bilateral symmetry
  11. 11. 8) Phylum Echinodermata
  12. 12. 8) Phylum Echinodermata-Examples: Seastars, sea urchins,sand dollars, seacucumbers-Bumpy skinnedanimals-Pentamerous radialsymmetry

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