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Ch 18 lesson 4
How organisms are classified
Term | Definition |
---|---|
kingdom | One of the five groups into which living things are classified. |
microorganism | An organism that is too small to be seen without a microscope. |
protist | An organism that usually is one-celled and has plantlike or animal-like properties. |
algea | Protists that have plantlike qualities and ususlly live in water |
protozoam | A protist that has animals-like qualities: some have properties of both plants and animals. |
flagellum | A whiplike tail that helps some one-celled organisms move (plural is flagella) |
cilia | Hairlike structures that help some one-celled organisms move. |
pseudopod | Part of some one-celled organisms that sticks out like a foot to move the cell along. |
amoeba | A protozoan that moves by pushing out parts of its cell. |
paramecium | A protozoan that moves by using hairlike cilia (plural is paramecia. |
euglena | A protozoan that behaves like both plants and animals. |
fungus | An organism that usually has many cells and decomposes material for its food (plural is fungi). |
decompose | To break down or decay matter into simpler substances. |
parasite | An organism that absorbs food from a living organism and harms it. |
moneran | An organism, usually one-celled, that does not have organelles. |