Zoology

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Author:
brenda1996
ID:
115976
Filename:
Zoology
Updated:
2011-11-10 18:26:07
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Mollusca
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Description:
Phylum Molluscaich animal
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  1. What type of symmetry do molluscs have?
    Bilateral symmetry
  2. What is the level of organization of Molluscs?
    Organ Level
  3. Are Molluscs Triploblastic or Diploblastic?
    Triploblastic
  4. Are Molluscs acoelomates, pseudocoelomates, or eucoelomates?
    eucoelomates
  5. What type of body plan do Molluscs have?
    Tube-within-a-tube
  6. With regards to the number of species, where does the phylum mollusca rank?
    2nd largest phylum
  7. What organ secrets the shell of a mollusc?
    mantle
  8. Why do animals need oxygen?
    Cellular respiration for energy
  9. what are the characteristics of a respiratory organ in molluscs?
    it is exposed to the enviorment, thin, and moist
  10. What type of circulatory system do most molluscs have?
    Open
  11. What part of the mollusc heart pumps blood?
    ventrical
  12. What type of reproduction do Molluscs have?
    Sexual Reproduction
  13. Where does fertilization occur in most Molluscs?
    female's mantle cavity
  14. What type of larvae are common to many marine molluscs and annelids?
    trochophore larvae (free swimming)
  15. What is the largest Mollusc?
    Giant Squid
  16. To what phylum are molluscs most closely related?
  17. Which class includes molluscs with a closed circulatory system?
    Class Cephalopoda
  18. Which class from the phylum Mollusca includes terrestrial species?
    Class Gastrooda
  19. Which mollusc class includes all marine animals?
    Class Cephalopoda
  20. Which is the largest Mollusc Class?
    Class Arthropoda
  21. Which class includes molluscs that do NOT have a radula?
    Class Bivalvia
  22. Which class of molluscs are filter-feeders?
    Class Bivalvia
  23. In which Mollusc class is torsion common?
    Class Gastropoda
  24. Class Monoplacophora~
    What type of animals are included?
    Neopilina
  25. Class Monoplacophora~
    Where do these animals live?
    Deep oceans
  26. Class Monoplacophora~
    What is the distinguishing characteristic of these animals?
    Metamerism (repetition of similar body parts)
  27. Class Monoplacophora~
    Why are these animals phylogenically important?
    They have links to molluscs and annelids
  28. Class Polyplachophora~
    What types of animals are included?
    Chitons
  29. Class Polyplachophora~
    Describe their shells
    8 dorsal plates
  30. Class Polyplachophora~
    Where do these animals live?
    • Marine
    • Found in Rocky Shores
  31. Class Polyplachophora~
    Whst do these animals eat?
    algae
  32. Class Polyplachophora~
    How do these animals find their way back to their "home rock" if washed away by the surf?
    Homing tendancy
  33. Class Polyplachophora~
    How do these animals protect themselves?
    They can roll up into a ball
  34. Class Scaphopoda~
    What type of animals are included?
    Tusk or toothshells
  35. Class Scaphopoda~
    Describe their shell.
    Shell opens at both ends
  36. Class Scaphopoda~
    Where do these animals live?
    Bottom Dwellers, Sand
  37. Class Scaphopoda~
    What special structures do these animals have for feeding?
    Captacula(used to capture food)
  38. Class Scaphopoda~
    What are the shells of these animals used for?
    trade, jewelry, clothes decorations
  39. Class Bivalvia~
    What type of animals are included?
    Clams and Mussels
  40. Class Bivalvia~
    Describe their shell
    2 lateral valves connected with a hinge
  41. Class Bivalvia~
    Where do these animals live?
    Mostly marine, some freshwater
  42. Class Bivalvia~
    What are their feeding habits?
    filter-feeders
  43. Class Bivalvia~
    How is a pearl produced?
    Layers of nacre form around an irritant produced by the mantle
  44. Class Bivalvia~
    What kind of larvae do freshwater clams have?
    Veligar
  45. Class Bivalvia~
    What are their economic uses?
    Pearls and food
  46. Class Bivalvia~
    What special structure do some bivalves have taht keep them from being washed away by the surf?
    Bussus threads
  47. Class Gastropoda~
    What other name do thses animals go by?
    univalves
  48. Class Gastropoda~
    What type of animals are included?
    Snails, slugs, conchs
  49. Class Gastropoda~
    Describe their shells
    Coiled shell (shell may be absent)
  50. Class Gastropoda~
    Where do these animals live?
    Mostly marine, freshwater, terrestrial
  51. Class Gastropoda~
    What are the feeding habits?
    hervivores and carnivores
  52. Class Gastropoda~
    What is the advantage of torsion?
    Allows head to be drawn into the mantle cavity for protectiom
  53. Class Gastropoda~
    What is the disadvantage of torsion? What solutions evolved as a result?
    fouling ~had to be overcome
  54. Class Gastropoda~
    economic uses
    food and currency
  55. Class Cephalopoda~
    What types of animals are included?
    octopus, squid, cuttlefish, nautilus
  56. Class Cephalopoda~
    Where do these animals live?
    All marine
  57. Class Cephalopoda~
    What are their feeding habits?
  58. Class Cephalopoda~
    Economic uses?
    food
  59. Class Cephalopoda~
    Which animal does NOT have a shell?
    Octopus
  60. Class Cephalopoda~
    Which animal's internal shell made of cartilage?
    Squid
  61. Class Cephalopoda~
    Which animal's internal shell is made of calcium?
    Cuttlefish
  62. Class Cephalopoda~
    Which animal has an external shell with internal chambers?
    Nautilus
  63. Class Cephalopoda~
    How do they swim?
    "jet propulsion" expell water through funnel
  64. Class Cephalopoda~
    function of chromatophores?
    Changes color, used for protection
  65. Class Cephalopoda~
    What is unusual about the reproductive habits of female octopuses?
    Females guard eggs and die after they hatch
  66. Class Cephalopoda~
    Which animal does NOT have sepia (ink)?
    Nautilus
  67. Class Cephalopoda~
    What is the function of the ink?
    Protection and to confuse predators
  68. ~Class Cephalopoda~
    How are cephalopods more advanced than other molluscs?
    have 2 hearts that pump blood to gills, 1 heart for the rest of the body~ high levels of activity

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