PROTISTS CHAPTER 19

KINGDOM PROTISTA (most diverse kingdom) Aquatic All are eukaryotic Unicellular or multi-cellular Microscopic or very large Heterotrophic or autotrophic Plant-like, animal-like or fungus-like

PROTOZOA (singular: protozoan) Animal-like protists All are unicellular heterotrophs Classified by how they move Move by means of cilia, flagella, pseudopods Reproduce asexually -(Binary fission) - some sexually (Conjugation) Some are parasitic sporozoans

AMOEBAS Protozoans with pseudopods Shapeless “False foot” Extensions of cytoplasm Aid in movement & feeding Shapeless

Phagocytosis

FLAGELLATES Flagella - long, whip-like hairs

CILIATES Cilia - tiny hairs Includes: Paramecium Vorticella Stentor

Plasmodium (causes Malaria) SPOROZOANS Produce spores Parasitic protozoans Malaria Sleeping sickness Trichomonas Plasmodium (causes Malaria)

http://www.youtube.com/watch?v=1UTJ38D0ukw&feature=player_detailpage

http://www.youtube.com/watch?v=I_qSrFPjtQw&feature=player_detailpage

FUNGAL PROTISTS Slime molds Unlike fungi, fungus-like protists are able to move and lack chitin in their cell walls. Slime molds

FUNGAL PROTISTS Slime molds Water molds Downy mildews

WATER MOLD SLIME MOLD

ALGAE Plant-like protists Autotrophs Lack true leaves, roots and stems Autotrophs Produce more than half the earth’s oxygen

Spirogyra Volvox Mixed green algae

ALGAE Photosynthesizing protists Contain chlorophyll Includes: DIATOMS Photosynthesizing protists Contain chlorophyll Includes: Red, green, brown, golden algae Diatoms - contain silica Dinoflagellates

Algae in Your Foods “Seaweed” Foods: broth, soups, seasons rice, added to salads, wrapped with sushi, rice crackers, flavors and preserves - noodles, bread, cheese, chocolate milk, creamed products, dairy desserts, dry mixes, evaporated milk, frozen food, fruit juice, ice cream, pudding, pasta, sauces and gravies, syrup, Red Algae Anti drying agent; food stabilizing and consistency, thickens, uniform texture Brown Algae Gel forming, suspending, emulsifying, film forming, thickens

RED ALGAE BROWN ALGAE

DIATOMS

Dinoflagellates: known as “fire algae” (cause red tides)