Protozoa are single-celled eukaryotes (organisms whose cells have actually nuclei) that frequently show features usually linked with animals, many notably mobility and also heterotrophy.

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They are often grouped in the kingdom Protista along with the plant-like algae and fungus-like water molds and slime molds.

In some newer schemes, however, most algae space classified in the kingdoms Plantae and Chromista, and in such cases the remaining creates may it is in classified together a kingdom Protozoa.

The surname is misleading, due to the fact that they room not animals (with the feasible exception that the Myxozoa).

Protozoa have traditionally been split on the communication of locomotion.

Most protozoans space too tiny to be seen through the naked eye - many are roughly 0.01-0.05 mm, although forms up to 0.5 mm room still fairly common - but can conveniently be found under a microscope.

Note: The above text is excerpted from the Wikipedia write-up "Protozoa", which has been exit under the GNU totally free Documentation License.
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