Primarily Unicellular although a few are multicellular Auto or Heterotrophic Primarily asexual Protists.

Primarily Unicellular although a few are

multicellularAuto or Heterotrophic

Primarily asexual

Protists

Three types of Protists1. Protozoans (first animal)- animal-like 4 types based on how they movea. Zooflagellates –swim with flagellum

b. Sarcodines-move with pseudopod (moves with false foot) which extends from the center of the cell pulling the rest of the cell along with it.

• The pseudopod engulfs food with it (endocytosis).

• Reproduce by binary fission.• Cause amebic dysentery

c. Ciliates (eye lash)-• move with cilia which move

like oars. Cilia also push food into the oral groove where it pinches off into vacuoles and digested by lysosomes

• Reproduce by binary fission and conjugation

d. Sporozoans- • parasites that have two or more hosts An example is Plasmodium vivax which

causes malaria by attacking liver cells and reproduce there, enter the blood making red blood cells burst, Mosquitos bite infected individual, sporozoans grow in stomach and move to mouth of mosquito

2. Plant-like protists or Algae a.Diatoms-fresh and salt water, unicellular,

cell walls rich in silicon (cell wall drops to bottom at death of diatom) forming diatomaceous earth and are collected for scouring products, tooth paste, and filters. Buried long enough form oil.

a. Dinoflagellates-1/2 are autotrophs and other heterotrophs feeding on decomposing material or a host-move with flagellum, most with two

Plankton Red tide-toxin produced by algae

causes fish kills

a. Euglenoids-fresh water, contractile vacuole, eyespot that helps them find sun for photosynthesis

D. Brown algae-multicellular, Kelp-producers that provide ½ of organic

material and ¾ of oxygen on Earth

Red algae-multicellular-seaweeds-absorb light at great depths because of their pigments

Green algae- land or water, store food as starch

Fungus-Like ProtistsFeed on decaying organismsSlime molds, water molds(potatoe blight)Cell wall is not chitin

Make sure you know the following: what it is, who has itPseudopodFlagellaCiliaEyespot Contractile vacuoleHow are protozoans classified?What two structures assist the euglena during

phototaxis?Which cellular structure is vital to maintaining the correct

balance of water and salts inside the animal-like protists and why do plant-like protists not have them?

What are the three types of protists?Which organism is both autotrophic and heterotrophic?What are the two methods of reproduction used by

protozoans?