Biology 121

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Biology 121
2011-12-07 19:29:20
Chapter 2o

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  1. ________ any eukaryote that is NOT a plant, animal, or fungus.
    - Mostly single-celled and microscopic in size.

  2. ____ are single-celled protists that live mostly in fresh water and are named after the group's best-known representative, Euglena, a complex single cell that moves about by whippings it flagellum through water.
  3. A member of a protist group that includes species with filamentous shapes that give them a superficially fungus-like appearance.
    Water molds
  4. _______photosyntheic stramenopiles found in both fresh and salt water, produce protective shells of silica (glass).
  5. A multicellular and photosynthetic protist.
    Brown Algae
  6. ______includes photosynthetic and non-photosynthetic organisms, organisms have a flagella and vary in the number of cells.
  7. ____ are single-celled organisms that have distinctive, small cavities beneath the surface of their cells.
  8. _____a member of a protist group that includes photosyntheic forms in which two flagella project through armor-like plates; abundant in oceans; can reproduce rapidly, causing "red tides"
  9. The explosive reproductive rate of certain dinoflagellates under the right enviromental conditions can produce concentrations so great that their microscopic bodies dye the seawater red or brown, as in this bay in Mexico.
    A red tide
  10. ______are parasitic living inside the bodies and sometimes inside the individual cells of their hosts.
  11. A member of a protist group characterized by cilia and a complex unicellular structure.
  12. _______multicellular, photosynthetic seaweeds.
    -deposit calcium carbonate within their bodies, contribute to coral reefs in tropical waters.
    - provide an anchoring site for other organisms
    Red Algae
  13. ________ a ciliate, reproduces asexually by cell division.
  14. ________ a ciliate, exchanges genetic material across a cytoplasmic bridge.
  15. The Chromists include __________ and ____________ organisms
    • -Photosynthetic
    • - Non-photosynthetic
  16. What is the plant disease caused by the parasitic water mold Plasmopara, that nearly destroyed the French wine industry in the 1870s?
    Downy mildew
  17. Characteristics of Diatoms?
    • - Unicellular
    • - Uses of diatomaceous earth
    • - Important component of phytoplankton
  18. What encase themselves with glassy walls?
  19. Characteristics of Brown Algae?
    • - Multicellular
    • - Photosynthetic
    • - Dominate in cool coastal waters
  20. The Alveolates include?
    • - Parasites
    • - Predators
    • - Phytoplankton - unicellular organisms
  21. Characteristics of Apicomplexans (also known as sporozoans)?
    • - Parasites
    • - Transmitted from one host to another via spores
  22. Characteristics of Ciliates?
    • - Most complex of the Alveolates
    • - Locomotion via cilia
  23. In a ciliate the oral groove acts as what?
    Acts as a mouth
  24. Food vacuoles in a ciliate are?
    Miniature digestive systems
  25. In a ciliate waste is expelled by .......
    Exocytosis through an anal pore
  26. What regulates water balance in a ciliate?
    Contractile vacuoles
  27. ______ are decomposers that inhabit the forest floor.
    Slime molds
  28. Form a multinucleate mass of cytoplasm called a Plasmodium.
    Acellular slime molds
  29. Live as independent cells but aggregate into a Pseudoplasmodium when food is scarce
    Cellular Slime Molds
  30. Characteristics of Euglenoids?
    • - lack a rigid covering and swim by means of flagella
    • - Unicellular
    • - Many are photosynthetic
  31. Possess flagella, free-living, and lives in mutualistic or parasitic symbiotic relationships.
  32. What can a "zooflagellate" genus Giardia cause?
    A "zooflagellate" (genus Giardia) may infect drinking water, causing gastrointestinal disorders.
  33. An extension of the plasma membrane by which certain cells, such as amoebas, locomote and engulf prey.
  34. _____ are freshwater protists.
  35. _______are primarily marine protists that produce beautiful shells.
  36. ______have thin pseudopods that extend through hard shells.
  37. - Live mostly in ponds and lakes, unicellular and multicellular forms, and closely related to plants.
    Green Algae