Lab Practical 2

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Author:
eeliz1
ID:
139725
Filename:
Lab Practical 2
Updated:
2012-03-05 00:45:01
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Zoology 1404
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Molluscs, Arthropods, Nematodes, and Platyhelminthes
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  1. Platyhelminthes
    • Phyla:
    • free-living
    • soft-bodied
    • bilateral symmetry
    • triploblastic tissue (acoelomate)

    • Classes:
    • Turbellaria
    • Trematoda
    • Cestoda
  2. Turbellaria
    • Class within Platyhelminthes
    • Mostly free living, aquatic carnivores.
    • Ciliated Epidermis.

  3. What are structures 1&5?
    Auricles

  4. What is structure 2?
    Intestine. Some species have intricately branched intestines, which helps with diffusion of nutrients since they lack a circulatory system.

  5. What is structure 3?
    Pharynx. Sucks in food. Can be extended through the ventral mouth.

  6. What are the structures in 4?
    Eye spots (ocelli)

  7. Where is the epidermis?
    1 and 4


    Planarian

  8. Where is the intestine?
    5 & 6



    Planarian

  9. Where is the pharyngeal cavity?
    8


    Planarian

  10. Where is the pharynx?
    3



    Planarian

  11. Where is the ciliated epidermis?
    4 (the ventral epidermis is ciliated for mvt)



    Planarian
  12. What are diverticula?
    Branches of the intestine which help with the circulation of nutrients.

  13. Where is the parenchyma?
    The parenchyma is a loose connective tissue that fills up spaces between organs.
  14. Trematoda
    • Class
    • flukes
    • parasitic, wide range of vertebreate and invertebrate hosts
    • suchkers for attachment to host

  15. ID
    • Class: Trematoda
    • Genus: Fasciola


  16. What is 1?
    Oral Sucker

  17. What is 2?
    Ventral Sucker

  18. What is 3?
    Testes

  19. What is structure 1?
    The oral sucker. It helps the worm attach to its host.

  20. What is structure 2?
    The pharynx. It's between the oral sucker, which serves as a mouth, and the intestine.

  21. What is structure 3?
    The intestine. It runs the length of the body is a rough oval shape.

  22. What is structure 4?
    The ventral sucker.


  23. What is structure 5?
    The uterus.

  24. What is structure 6?
    The testes.


  25. What is structure 7?
    The excretory pore.

  26. ID. Monoecious or Dioecious?
    • Trematode
    • Monoecious

  27. What is structure 1?
    The scolex

  28. What is structure 2?
    The rostellum. Helps anchor the tapeworm.


  29. What is structure 3?
    Suckers. Help to create suction to stick to the host.
  30. Cestoda
    • Class within platyhelminthes
    • parasitic
    • mostly vertebrate hosts
    • complete life cycle; intermediate and multiple hosts
    • obtains food using microtriches

  31. ID
    • Gravid proglottid
    • Class Cestoda, Phyla Platyhelminthes

  32. ID
    Mature proglottid

  33. ID
    Immature proglottid
  34. What type of proglottid is found in the:
    Anterior: A
    Middle: B
    Posterior: C
    • A: immature
    • B: Mature
    • C: gravid
  35. Where is the mouth on a tape worm?
    There isn't one.
  36. Nematoda
    • Phylum
    • Pseudocoelom
    • complete digestive tract
    • usually dioecious
    • free-living and parasitic members

  37. What is the indicated structure?
    Spicules to hold the female's vulva open.

  38. ID
    Male ascaris
  39. What did we disect?
    • Phyla: Nematoda
    • Genus: Ascaris

  40. ID
    Male ascaris testis

  41. ID
    Lateral Line

  42. What structure is indicated by the probe?
    A uterus.
  43. Which way does the V of Ascaris's two uteri open?
    Towards the postierior end.
  44. How are the male gametes released?
    Down the ejaculatory duct and out through the cloaca
  45. How are the female gametes released?
    Down the vagina and out the vulva.

  46. What is structure 1?
    Telson/ caudal spine


  47. What is structure 2?
    Book gills

  48. What is structure 3?
    Walking legs


  49. What is structure 4?
    Pedipalps


  50. What is structure 5?
    Abdomen


  51. What is structure 6?
    Cephalothorax

  52. What is structure 7?
    Chelicerae
  53. Arthropoda
    • Phylum
    • Chitin exoskeletons
  54. Trilobita
    • Subphylum of arthropoda
    • all extinct
    • head, throax, and abdomen.
  55. Chelicerata (taxonomy)
    • Subphylum of arthropoda
    • horseshoe crabs
    • scorpions
    • spiders
    • mites
  56. Chelicerata
    • Cephalothorax and abdomen
    • Chelicerae
    • pedipals
    • 4 pairs of walking legs
    • book gills/lungs
  57. Merostomata
    • Class of Arthropoda, Subphylum Chelicerata
    • Horseshoe crabs
    • have a telson
  58. Arachnida
    • Class, subphylum Chelierata
    • Spiders, scorpions, mites
    • pedicel (connects abdomen and cephalothorax)
  59. What is the pedicel?
    Connects a spider's cephalothorax and abdomen


  60. What is the green structure?
    • Chelierae
    • Fangs are a part of it

  61. What is the structure indicated by the probe?
    Pedipalps

  62. What is this structure?
    Scorpion's pedipalp (the end is modified into a pincer)

  63. ID
    Scorpion Chelicerae
  64. Do spiders have jaws?
    No, no mandibles
  65. Crustacea
    • Subphylum
    • Cephalothorax covered by carapace
    • abdomen
    • biramous appendages

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