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Transcript of Protists
Scientists classify protists by their method of obtaining nutrition.
Protists are divided into three groups: animal-like protists, plantlike protists, and fungus like protists.
They make their own food through
Yet, some can actually consume others when there is no light available.
Protists are classified more easily by what they are
than by what they
animals, plants, or fungi
because they do not have all of the characteristics necessary to place them in any of these kingdoms.
Protists share one important trait: they are eukaryotes.
Like all eukaryotes, the DNA of protists is found within the membrane-bound nucleus.
Protists are a group of
organisms that do not necessarily share evolutionary history.
Kingdom Protista was created to include this diverse group of more than
Protists are usually subdivided according to the way they obtain food.
Although protists have a cellular structure similar to other eukaryotes, there are remarkable
in their reproductive methods.
, while others
Feed off dead organic matter.
Some slime molds can consume other organisms and some are even considered parasites.
The protozoan (Plural protozoa
or protozoans is an example
of an animal like protist because it is an heterotroph.
Some animal like protists are
Protists are typically found in damp or aquatic environments such as decaying leaves, damp soils, ponds, streams and oceans.
Protists also live in symbiotic relationships.
is a microscopic protists that causes disease in insects.
Some species of microsporidia are used as insecticides.
Lynn Marguliss proposed the theory of endosymbiosis.
Endosymbiosis states that eukaryotes formed when a large prokaryote engulfed a much smaller prokaryote and they learned to live in simbiosis.