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What are protists?

A protist is a member of a group of eukaryotic organisms, which have a membrane-bound nucleus. Although classified together, they are very diverse. Scientists classify protists as plantlike, animal-like and funguslike. What are protists?. How A re Protists C lassified?. Euglena.

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What are protists?

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  1. A protist is a member of a group of eukaryotic organisms, which have a membrane-bound nucleus. Although classified together, they are very diverse. Scientists classify protists as plantlike, animal-like and funguslike. What are protists?

  2. How Are Protists Classified?

  3. Euglena make up the base of aquatic food chains phytoplankton makes up half of the photosynthesis that occurs on earth (oxygen) can cause Red Tides - algal blooms - which are toxic Commonly called sea weed Have large leaf-like structures called blades Have air-filled sacs called air bladders Have root-like structure called holdfast Live in salt water Are used by humans to help make pudding and salad dressing. Examples of Plantlike Protists

  4. The ameba is an example of this type of animal-like protist. These protists move by extending their bodies forward and then pulling the rest of their bodies forward as well (check it out).  The finger-like structures that they project forward are called pseudopods.  The pseudopods are also used to trap food. The Giardia is an example of this type of animal-like protist.. These protists move by beating their long whiplike structures called flagella.  These protists can have one or more flagella that help them move.  Many of these protists live in the bodies of other organisms.  Sometimes, they help their host, while at other times they harm their host. Paramecium Examples of Animal -like Protists These protists move by beating tiny hair-like structures called cilia.  The cilia act as tiny oars that allows the protist to move through its watery environment (check it out).  The cilia also help the protists capture food.

  5. Water molds live in water or moist environments Look like tiny threads with a fuzzy covering Attack food such as potatoes, cabbage, and corn and can destroy whole crops. Dog Vomit Slime Mold - because it looks like dog puke, but it's really a protist, in the phylum Myxomycota Slime Molds live in moist soil and on decaying plants and trees Very colorful Move by forming pseudopods Feed on bacteria and other microorganisms. Examples of Funguslike Protists

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