Protozoans and Invertebrates

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Anonymous
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75088
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Protozoans and Invertebrates
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2011-03-24 21:45:24
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Protozoans Invertebrates Marine Ecology
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Chapter 6 study notes.
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  1. What kind of reproduction is most common in the Protista kingdom?
    asexual (cell division)
  2. 1/2 of all protozoans are....
    foraminiferans
  3. Radiolarians are entirely marine and mostly...
    planktonic
  4. What is the most abundant kind of ciliophores?
    tintinnids
  5. How do tintinnids feed?
    by using ciliated tentacles
  6. What two things do Sarcomastigophoras use for movement?
    pseudopodias and flagellas
  7. hollow ball of cells
    Blastula
  8. For sponges, water enters through openings and circulates through the internal cavities and then circulates though a large excurrent pore known as...
    osculum
  9. Sponges are supported internally though a network of flexible ______ fibers
    spongin
  10. gelatinous layer that separates inner and outer body walls
    mesoglea
  11. baglike digestive tract that the central mouth leads to
    gastrovascular cavity
  12. batteries of microscopic structures that arm the tentacles
    nematocysts
  13. special cells that produce nematocysts
    cnidoblasts
  14. free swimming cnidarians with the main body above the tentacles (jellyfish)
    medusae
  15. sessile benthic cnidarians with main body below the tentacles (anemones)
    polyps
  16. What is closely related to the Cnidarians but doesn't have stinging cells?
    Ctenophores
  17. What kind of body symmetry do ctenophores have?
    Radial
  18. What kind of cells replace the nematocysts cells for Ctenophores?
    sticky coloblast cells (that don't sting!)
  19. harder sponge fibers comprised of either CaCO3 or SiO2
    spicules
  20. side of symmetry with the mouth
    oral
  21. opposite of the oral side
    aboral
  22. external longitudinal bands of cilia in ctenophores
    ctenes
  23. one plane of symmetry exists to make 2 mirror image halves consisting of anterior (head), posterior (rear), dorsal (top), and ventral (bottom).
    bilateral body symmetry
  24. Most Platyhelminthes are what and consist of what?
    parasitic and consist of flukes and tapeworms
  25. Where do nematodes live?
    In bottom sediment throughout all depths
  26. What is the most abundant multicellular animal in the marine benthic environment?
    nematodes
  27. Ectoprocta, Phorondia, and Brachiopoda are characterized by...
    a true internal cavity called the coelom
  28. Lingula has a consistent fossil history of
    1/2 billion years
  29. and hard shell around a soft body, a foot for locomotion anchorage and securing food are characteristics of....
    unsegmented mollusks
  30. sense organs near anterior (found in octupuses and squids)
    Cephalization (brain)
  31. What belongs to the Amphineura class?
    Chitons
  32. How many shells can Chitons have?
    1,2, or 8
  33. Mussels, clams, scallops and oysters have a two-piece hinged shell placing them in...
    Bivalvia
  34. type of larva found in annelid worms (stage 1)
    trochophore
  35. after growing a ciliated tissue (velum), annelid worms develop into stage 2 larva known as...
    veliger
  36. internal body fluid against which muscles work to provide shape changes to allow movement
    hydrostatic skeleton
  37. linear series of structural units (repeated body units)
    metameres
  38. (annelids) Polychaete's internal organs and body cavities are subdivided into..
    metameres
  39. external supppoting skeleton found in arthropods
    exoskeleton
  40. complex organic substance in exoskeletons
    Chitin
  41. What accounts for 75% of all living species identified so far?
    Arthropods
  42. All forms of echinoderms are ______ as adults
    benthic
  43. echinoderms are mostly characterized by a calcerous skeleton with....
    external spines or knobs with 5-sided symmetry
  44. Echinoderms unique internal water-vascular system hydraulically operates the...
    numerous tube feet
  45. cartilage rod the forms the central skeletal support of chordates (not vertebrates)
    notochord
  46. Urochordata and Cephalochordata are relatively _______ and completely marine
    small
  47. Urochordata includes animals such as benthic, filter-feeding ________ and planktonic, gelatinous ______
    sea squirts and calps

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