Lab Practical 2

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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.
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    What are structures 1&5?
    Auricles
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    What is structure 2?
    Intestine. Some species have intricately branched intestines, which helps with diffusion of nutrients since they lack a circulatory system.
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    What is structure 3?
    Pharynx. Sucks in food. Can be extended through the ventral mouth.
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    What are the structures in 4?
    Eye spots (ocelli)
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    Where is the epidermis?
    1 and 4


    Planarian
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    Where is the intestine?
    5 & 6



    Planarian
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    Where is the pharyngeal cavity?
    8


    Planarian
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    Where is the pharynx?
    3



    Planarian
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    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.
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    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
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    ID
    • Class: Trematoda
    • Genus: Fasciola
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    What is 1?
    Oral Sucker
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    What is 2?
    Ventral Sucker
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    What is 3?
    Testes
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    What is structure 1?
    The oral sucker. It helps the worm attach to its host.
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    What is structure 2?
    The pharynx. It's between the oral sucker, which serves as a mouth, and the intestine.
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    What is structure 3?
    The intestine. It runs the length of the body is a rough oval shape.
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    What is structure 4?
    The ventral sucker.
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    What is structure 5?
    The uterus.
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    What is structure 6?
    The testes.
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    What is structure 7?
    The excretory pore.
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    ID. Monoecious or Dioecious?
    • Trematode
    • Monoecious
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    What is structure 1?
    The scolex
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    What is structure 2?
    The rostellum. Helps anchor the tapeworm.
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    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
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    ID
    • Gravid proglottid
    • Class Cestoda, Phyla Platyhelminthes
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    ID
    Mature proglottid
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    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
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    What is the indicated structure?
    Spicules to hold the female's vulva open.
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    ID
    Male ascaris
  39. What did we disect?
    • Phyla: Nematoda
    • Genus: Ascaris
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    ID
    Male ascaris testis
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    ID
    Lateral Line
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    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.
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    What is structure 1?
    Telson/ caudal spine
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    What is structure 2?
    Book gills
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    What is structure 3?
    Walking legs
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    What is structure 4?
    Pedipalps
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    What is structure 5?
    Abdomen
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    What is structure 6?
    Cephalothorax
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    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
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    What is the green structure?
    • Chelierae
    • Fangs are a part of it
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    What is the structure indicated by the probe?
    Pedipalps
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    What is this structure?
    Scorpion's pedipalp (the end is modified into a pincer)
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    ID
    Scorpion Chelicerae
  64. Do spiders have jaws?
    No, no mandibles
  65. Crustacea
    • Subphylum
    • Cephalothorax covered by carapace
    • abdomen
    • biramous appendages
Author:
eeliz1
ID:
139725
Card Set:
Lab Practical 2
Updated:
2012-03-05 05:45:01
Tags:
Zoology 1404
Folders:

Description:
Molluscs, Arthropods, Nematodes, and Platyhelminthes
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