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5
Science
7th Grade
11/03/2009

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Term
Sessile
Definition
An organism that cannot move becasue it is attached to something. Ex. Barnacle, sponge, oak tree, coral.
Term
Motile
Definition
An orgnaism that can move it is not attached to anything. Ex. Humans, Rats, Sharks, birds, sea urchin.
Term
Unicellular
Definition
An organism that is composed of only one cell. Cannot see without microscopes. Ex. Euglena, amoeba, yeast, bacteria, viruses.
Term
Multicellular
Definition
An organism that is made of two or more cells together. All plants and animals that you can see with your eye. Ex. cats, slugs, humans, mice.
Term
Endothermic
Definition
An organism that can maintain a certain body temerature all year round. Only birds and mammals. Warm blooded. Ex. Humans: 98.6, Rats: 100.0, Hummingbirds:105.0.
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