Shared Flashcard Set

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Ch. 37
Kingdom Animalae
16
Biology
Undergraduate 1
04/01/2008

Additional Biology Flashcards

 


 

Cards

Term
Phylum Platyhelminthes (flat worms)
Definition
•    dorsoventrally flattened bodies
•    bilateral symmetry
•    true organ systems
•    triploblastic (three true germ layers)
•    one opening to the gastrovascular cavity
•    acoelomate (have no body cavity).


Term
   Class Turbellaria ( free-living flatworms )
Definition
•    Hermaphroditic
  • Dugesia(planaria)
•    eyespots
•    pharynx
•    fig 37. 2: three germ layers, pharynx

Term
 Class Trematoda (parasitic flukes)
Definition
  •  endoparasites and ectoparasites
  •    lack epidermis and epicuticle
Term
Opisthorchis(Clonorchis) chinese liver fluke
Definition

•    Fig 37.4: sucker, uterus, gastro-vascular cavity, testis
Term
Fasciola Sheep liver fluke
Definition
    Fig 37.5: sucker, uterus, gastro-vascular cavity, testis
Term
Schistosoma blood fluke
Definition

•    disease schistomomiasis
•    intermediate hosts
•    definitive hosts
•    dioecious(separate male and female
Term
 Class Cestoda (tapeworm)
Definition
•    endoparasites
•    fig 37.8 scolex, neck, proglottids, gravid proglottids
    Taenia
Term
Phylum Nematoda (roundworms)
Definition

•    extraordinary diversity
•    round body (due to hydrostatic pressure), cover with cuticle
•    complete digestive tract (both mouth and anus)
•    pseudocoelom
•    elephantiasis and other disease
Term
Ascaris
Definition

•    Males are smaller and have a hooked posterior end
•    Fig 37.14: longitudinal muscles, intestine pseudocoelom, testes, uterus, ovary, oviduct, cuticle
Term
Turbatrix    living vinegar eel
Definition
•    Only longitudinal muscles, whip – like motion
Term
Trichinella
Definition
Disease trichinosis
•    Encysted larvae
    Ancylostoma
    Enterobius
Term
Phylum Annelida (segmented worms)
Definition

•    Segmentation and septa
•    True coelom
•    Circulatory, digestive, nervous, and excretory systems
•    setae
•    fig 38.1
Term
Class Polychaeta
Definition

•    Many setae
•    Parapodia and setae
    Nereis (clam worm)
Term
Class Oligochaeta
Definition

•    Few setae and lack parapodia
•    Alternating contractions of circular and longitudinal muscles against hydrostatic pressure within each segment
Term
Lumbricus (earth worm)
Definition

•    External feature (very important)
•    Internal feature (very important)
•    Page 421 to page 424, memorize as much as you can
Term
Class Hirudinea (leeches)
Definition

 

• No setae and reduced segmentation
  • Hermaphaditic
  • Two suction cuts at the posterior and anterior parts 
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