bio notes 3-28

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bio notes 3-28
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2012-04-19 03:00:32
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bio notes 3-28
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  1. -triploblastic
    -bilateral symmetry
    -anterior brain
    -digestive tract (most)
    -ventral nervous system
    -embryonic blastospore becomes mouth
    -spiral cleavage
    protostomes
  2. wher coelom forms where mesoderm splits
    schizocoelous
  3. what are the 2 major protostome clades?
    lophotrocozoans, ecdysozoans
  4. what are the protostome clades based on?
    DNA sequence analysis
  5. what has either a lophophore or a trocophore larval stage?
    lophotrocozoans
  6. what do Bryozoans, Brachiopods, and Phoronids have?
    lophophore
  7. what do Bryozoans, ribbon worms, annelids, and mollusks have?
    trocophore
  8. what has a cuticle or exoskeleton (chitin) secreted by the epidermis. must undergo ecdysis to grow?
    ecdysozoans
  9. what has a modified coelom?
    arthropods
  10. what has a reduced coelom?
    mollusks
  11. what are the 2 phylums of lophotrocozoans?
    Bryozoa, Platyhelminthes
  12. what is the common name for Phylum Bryozoa?
    moss animals
  13. what is the common name for Phylum Platyhelminthes?
    flatworms
  14. which lophotrocozoan is
    -coelomate
    -has lophophore
    -marine
    -colonial
    -reproduce sexually and asexually
    Phylum Bryozoa
  15. which type of lophotrocozoan
    -acoelomate
    -unsegmented
    -dorsoventrally flattened body
    -gastrovascular cavity or no digestive tract
    -some free living; most parasitic
    Phylum Platyhelminthes (flatworms)
  16. what are the 3 classes of flatworms
    Turbellaria, Trematoda, Cestoda
  17. common name for Turbellaria?
    turbellarians
  18. what is an example of a turbellarian?
    planaria
  19. what type of flatworm is free living, marine or freshwater, move via cillia or undulation, have ocelli (eyespots), monoeciuos?
    turbellaria
  20. what is the common name for trematoda?
    fluke
  21. what type of flatworm is the parasite or mollusks and vertebrates, inhabits digestive tract and/or liver, complex life cycles with intermediate hosts, mocoecious, some dioecious?
    trematoda
  22. example of Trematoda?
    Fasciola hepatica (liver fluke), Schistosoma mansoni (blood fluke)
  23. what is the common name for cestoda?
    tapeworm
  24. what type of flatworm are parasites of vertebrates, head has hooks and suckers, body composed of successice proglottids, monoecious?
    Cestoda (tapeworm)
  25. what is an example of Cestoda (tapeworm)
    Taenia proglottid
  26. what is pseudocoelomate, head with crown of cilia (corona), complete digestive tract, freshwater, dioecious, some parthenogic?
    rotifera
  27. what is it called when an organism produces eggs without being fertilized?
    partenogenic

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