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KINGDOM PROTISTA
(Courtesy of Ohio State
University)
Members of this kingdom are
- made up of a complex
eukaryotic
cell,
- some members make their own
food,
- and some take food in from an
outside source.
General information:
 | Much more complicated than
monerans
| Cell is somewhat like the
whole body of a plant or animal "stuffed" into a single cell
| Has many specialized parts
that carry out specific functions of living
 | Example: We have legs for
walking that are made of many cells. Protists use special parts of its
SINGLE cell as "legs" |
| Cells are so complex that
they are often thousands of times larger the one of our own cells in our
body. |
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Phyla:
Diatoms
| Covered by two shells that
fit together like a pill box
| Float on the surfaces of
fresh and salt water
| Food is stored within their
cells as small drops of "oil"
| Much of our petroleum may
be the stored food of diatoms that lived millions of years ago |
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Dinoflagellates
| Have two whip-like tails
for movement
| Make their own food
| Live on the surface of
water
| Overpopulation can leave
water smelling and tasting bad |
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Euglena
| Biologists used to think
they where plants or animals
| They are protists because
of their specialized structures within each cell
| Have green pigments to
make their own food through photosynthesis
| Have a kind of an
"eye"
| Swim to move about
| Appear to have a
mouthlike structure |
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Protozoans
| Pursues, catches and
swallows its food
| Grouped into classes
according to the way they move about (only 4 classes are shown below) |
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Classes
of Protozoans
Sarcodines
| Resemble small masses of
cloudy gelatin
| Move by pushing out parts
of their cell membranes
| Fluids in these parts of
the cell flow in the direction they are moving |
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Ciliates
| Are covered by short
hairlike structures called cilia
| The cilia contract in
"waves" to push the organism along
| Cilia movement may
"sweep" food into the mouthlike structures |
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Flagellates
| Move by using one or two
whiplike tales called flagella
| Most live independently
| Some live inside other
organisms
| Those that live inside
other organisms may cause diseases such as African sleeping sickness |
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Sporozoans
| Live inside other
organisms
| Most have no structures
to move about
| Depend on their
"host" for transportation
| Example: Malaria
sporozoans are carried about in the human body by the bloodstream |
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