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Biology 03050, Invertebrate Zoology


Lab manual: Hickman et al., 9th ed., Exercise 7, pp. 91-108


WORD BANK (terms that you are responsible for):

  1. Acanthamoeba, sarcodine
  • Amoeba, sarcodine
  • chloroplast
  • contractile vacuole
  • daughter colony
  • ectoplasm
  • endoplasm
  • Euglena, flagellate
  • eyespot (stigma)
  • flagellum. -a
  • foraminiferan, sarcodine
  • food vacuole
  • Giardia, flagellate (trophozoite or feeding stage)
  • nucleus
  • pellicle
  • plasma membrane (plasmalemma)
  • pseudopodium, -ia
  • radiolarian, sarcodine
  • Trypanosoma, flagellate
  • undulating membrane
  • Volvox, flagellate
  • zygote
  • Using your lab manual for guidance, perform those parts of Exercise 7 listed below:

    1) Read the introduction to the protists, pp. 91-92.

    1. Exercise 7A: examine live ameobas without a cover slip. We have available depression slides that provide space for the crawling amebas., although not squashing hard with the cover slip should be fine. In addition, look at prepared slides of Amoeba vs. Acanthameoba (Acanthamoeba is a free-living amoeba that may cause eye damage in those who do not disinfect their contact lenses). What are differences that you see, e.g., extent of pseudopodia? In addition to these sarcodines, note that amoeba-like organisms can secrete shells as well, as seen in slides of foraminiferan and radiolarian shells.
    1. Exercise 7B: examine live euglenas with Protoslo. We will use the depression slides, to examine the living Volvox (if it is still alive by your lab--it can be a bit finicky!). Daughter colonies of Volvox can be seen in prepared slides as well. Some of the prepared Volvox slides show sections of zygotes. Through what process are zygotes formed? In contrast to these chlorophyll-containing flagellates, look at prepared slides of Trypanosoma and Giardia. What diseases do these flagellates cause? Where do they live inside of human beings?


    Your instructor may base homework and/or quizzes on questions posed in this handout or in the assigned reading.




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