Porifera and Cnidaria

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HPizir
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151730
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Porifera and Cnidaria
Updated:
2012-05-02 18:08:54
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Porifera Cnidaria Science
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Porifera and Cnidaria Science (animal characteristics)
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  1. What cell type has flattened cells that cover the body surface?
    Pinacocytes
  2. What cell type has flagella and maintains water through a sponge?
    Choanocytes
  3. What cell type digests and distributes nutrients along with producing reproductive cells?
    Amoebocytes
  4. What cell type secrets spicules (which are made of glass, chalk, or proteins)?
    Amoebocytes
  5. What cell type has cells that curls end to end to form ostia prores?
    Porocytes
  6. Which class of Cnidaria are considered primitive polyps?
    Class Hydrozoa
  7. Which class of Cnidaria are considered medusa forms?
    Class Scyphozoa
  8. Which class of Cnidaria are considered advanced polyps?
    Class Anthozoa
  9. What are some examples of what would be classified in a class such as Hydrozoa?
    Hydra, Physalia, and Obelia
  10. What are some examples of what would be classified in a class such as Scyphozoa?
    Aurelia
  11. What are some examples of what would be classified in a class such as Anthozoa?
    Sea anemones and corals
  12. What kind of symmetry do Porifera have?
    Asymmetrical
  13. What kind of symmetry do Cnidaria have?
    Radial
  14. What kind of symmetry do Platyheminthes have?
    Bilateral
  15. What is the muscular organ in the Planarian that releases enzymes to digest food is the...
    Pharynx
  16. How does a Planarian reproduce sexually?
    by internal ferilization
  17. How does a Planarian reproduce asexually?
    By regeneration
  18. What are 3 examples of Platyhelminthes?
    Tapeworms, Flukes, and Planaria
  19. This term means cross or self fertilization
    Hermaphroditic
  20. What are the 4 characteristics of Platyhelminthes?
    • Nerve net/ cords
    • Some have beginnings of a nervous system such as a ganglion
    • Eyespot
    • Specialized sense cells
  21. What are the typical sizes for Platyhelminthes?
    1 mm to several meters
  22. How many body opening are do Platyhelminthes have?
    one
  23. What transports wastes with the help of flame cells to exit through excretory pores in Platyhelminthes?
    Protonephridia
  24. where is the mouths location in Platyhelminthes?
    in the center of the body
  25. What are 3 examples of Cnidaria?
    Jellyfish, Anemone, and Corals
  26. Cnidarians poison their prey by using tiny stinging cells located on the tentacles. What are the stinging cells called?
    Cnidocytes
  27. How do Cnidaria reproduce asexually?
    budding
  28. What kind of body cavity do Cnidaria have?
    Gastrovascular Cavity
  29. How do Cnidaria sexually reproduce?
    through external reproduction
  30. How many body layers do Cnidaria have and what are their names?
    2 (Endoderm and Ectoderm)
  31. What is it called when an organism has a body shaped like an umbrella?
    Medusa
  32. What is it called when an organism has a tube shaped body and a mouth surrounded by tentacles?
    polyp
  33. What is a another term for having 2 body layers?
    Diploblastic
  34. Porifera are ________, which mean they have no backbone.
    invertebrates
  35. What’s an example of a Porifera?
    sponges
  36. What does the term Acoelomate mean?
    no body cavity
  37. What does the term Pseduocoelomate mean?
    false/fake body cavity
  38. What does the term Coelom mean?
    the body cavity is completely enclosed in mesoderm
  39. What does Asymmetry mean?
    no symmetry
  40. What does radial Symmetry mean?
    2 or more symmetry (multiple lines of symmetry)
  41. What does Bilateral symmetry mean?
    middle mirror symmetry (1 line)
  42. What is it called when waste leaves the same opening that food goes in?
    Incomplete Digestion
  43. What is it called when there are special regions to breakdown and process food?
    complete digestion
  44. What is it called when the coelom forms as an outgrowth of the digestive cavity?
    Deuterostome
  45. What is it called when the coelom forms with the space between the body wall and the digestive cavity?
    Protostome
  46. What are the 3 germ layers of Gastrula?
    • Endoderm
    • Ectoderm
    • Mesoderm
  47. What is a big ball of cells that are undifferentiated and ready to grow into anything they need?
    Blastula
  48. What is the lining of hollow organs?
    Endoderm
  49. What germ layer gives rise to the nervous system and Epitheliel cells?
    Ectoderm
  50. What two things do Molluscs lack?
    Heads + Tails (Cephalization)
  51. What is the large center hole in Porifera where waste is expelled?
    Osculum

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