Protists 1222022 1 Protista Kingdom Unicellular and Multicellular

Protists 1/22/2022 1

Protista Kingdom Unicellular and Multicellular Heterotrophic and Autotrophic Eukaryotic Contains the most diverse organisms in one kingdom 1/22/2022 2

3 Kinds of Protists Protozoa—animal like protists Algae—plant like protists Fungus like protists 1/22/2022 3

Protozoan (animal-like protists) Grouped according to their method of movement: 1. Amoeba—move using a pseudopodia (false foot)an extension of their plasma membrane 2. Flagellates—have one or more flagella (whip-like tail) 3. Ciliates—have hair-like cilia that cover their bodies (ex: Paramecia) 4. Sporozoans—produce spores and are parasitic (ex: Plasmodium which causes malaria) 1/22/2022 4

Amoeba proteus • move and eat by use of pseudopods (temporary projections of the cytoplasm) 1/22/2022 5

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• some use flagella to move 1/22/2022 7

Paramecium caudatum • use cilia for feeding and movement (short hair-like projections) 1/22/2022 8

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1/22/2022 CLICK 12

Eyespot – Phototaxis and/or chemotaxis 1/22/2022 13

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Algae (plant-like protists) 1. Euglenoids—can be autotrophic or heterotrophic-use flagella for movement 2. Diatoms—have shells composed of silica (hard shell; large component of phytoplankton) 3. Dinoflagellates—have 2 flagellaseveral species cause fish kills (ex : ”red tide”) 1/22/2022 16

Euglena gracilis 1/22/2022 17

Stentor coeruleus 1/22/2022 18

Diatoms 1/22/2022 19

Dinoflagellate 1/22/2022 20

Sounds AWESOME right? ! Sadly…not quite true. BEWARE OF BIASED and BOGUS claims by some in the scientific community. Importance of peer research! 1/22/2022 21

Fungus-like Protists Fungus-like in that they decompose organic materials Examples include slime molds, water molds, and downy mildew 1/22/2022 22

Slime mold 1/22/2022 23

mildew 1/22/2022 24

Phytophthora infestans 1/22/2022 25