Download SBI3C, Rm - Holterman

SBI3C, Rm. 126
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Group Member Name:______________________________
Date:______________________________
SBI3C Protist Worksheet
Protists are a uniquely diverse group of organisms. Some display characteristics of plants,
and others display those of animals. Some even display characteristics of both! Read pages 128133 in your textbook, and/or watch this video on protist diversity.
(https://www.youtube.com/watch?v=Ln69k7LyTsU)
Afterward, get yourself into a group of two (three max). One of you will complete the
first table on their own sheet, and the other will complete the second table on their own sheet.
Include the name of at least one example organism (Volvox algae, for instance) on your table.
Once each of your individual tables is complete, take turns explaining the information to
each other. Once each of you has completed both tables, construct your own venn-diagrams in
the space below.
Finally, answer these questions together: What are some important characteristics that are
common between both protists? What are some characteristics that differ between algae and
protozoa? Are they mostly similar, or mostly different? Explain.
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Table 1 (Protozoa) [Representative Organism:__________________________________]
Cell Type
(Eukaryote/Prokaryote)
Prokaryote
Characteristics (Size, Shape,
Structure, and Movement)
Unicellular, irregular shape or shape shifter,
no cell wall, usually has a flagella or cilia
Methods of Reproduction
Binary fission: cell splits in two.
Conjugation: DNA passed between 2 cells
Ecological Role
Decomposers, low on the food chain
Some can produce oxygen
Connection to Human Health
Some are parasitic and cause illness (ex.
giardia causes Beaver Fever)
Table 2 (Algae) [Representative Organism:__________________________________]
Cell Type
(Eukaryote/Prokaryote)
Eukaryote
Characteristics (Size, Shape,
Structure, and Movement)
Unicellular, no cell wall, usually brick
shaped, usually no movement
(but many algae break the rules)
Methods of Reproduction
Binary fission: cell splits in two.
Conjugation: DNA passed between 2 cells
Ecological Role
Produce most of the oxygen in the
atmosphere
Bottom of the food chain; feed many
organisms
Connection to Human Health
Algal blooms (when lots of algae grow in a
lake or ocean) can make toxic chemicals