Marine Bio Echinoderms

  1. How are Algae classified?
    • by color
    • green - freshwater
    • red - rigid
    • brown/kelp - largest multicellular algae in physical size
  2. Symmetry of sponge, echinoderm, cnidarian
    • sponge - none
    • cnidarian and echinoderm - radial
  3. Four groups of Cnidarians
    • Jellyfish
    • Coral
    • Sea anemones
    • Portuguese Man O'War
  4. Statocyst
    cell, gives jelly sense of up and down
  5. medusa
    umbrella head structure
  6. nematacyst
    stinging cells inside tentacles of cnidarians
  7. flowering animals
    sea anemones
  8. network of nerve cells
    nerve net
  9. deadliest jelly
    • box jelly/sea wasp
    • hunt prey
    • toxin attacks individual
  10. siphonophores
    colony animals aka port man o war
  11. lions mane jellies
    • cold waters of north atlantic, arctic, north pacific
    • largest, 2 meters in diameter
    • 12 month lifespan
  12. Sea Nettle live where?
    • jellyfish
    • chesapeake bay va
    • 1 meter diameter
  13. where are sea stars found
  14. what do sea stars eat/who eats them
    • eat mollusks, mussels, clams, oysters, barnacles, gastropods
    • eaten by sea otters and sea birds
  15. what does madreporite do
    opening that lets water into vascular system
  16. pedicellariae
    minute pincer-like organ, keeps body surface clean
  17. eyespot
    spot on arms, only detects light
  18. ambulacral grooves
    radiating channels through which tube feet protrude
  19. tube feet
    use to move and pry open prey
  20. how do sea stars reproduce
    external fertilization and spawning as well as reproduction
  21. which echinoderm doesn't regenrate
    sand dollar
  22. defense of urchin
  23. defense of sea cucumber
    can expel digestive tract
  24. echinoderm structure
    CaCO3 endoskeleton held together by connective tissue
  25. osculum
    large opening on top of sponge, releases water and waste
  26. ostia
    smaller pores that take in water and nutrients
  27. spicules
    provide structure and support for the sponge
  28. Cells of sponge
    • Myocytes: muscle cells that open and close pores
    • Collar cells: found within the sponge that contain flagella (‘whips’ that produce water currents)
    • Amebocytes: “brain” that supplies food and oxygen to sponge
  29. how do sponges reproduce
    external fertilization through spawning, asexual through budding
Card Set
Marine Bio Echinoderms