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 protistsAll are unicellular heterotrophsClassified by how they moveMove by means of cilia, flagella, pseudopodsReproduce asexually -(Binary fission) - some sexually (Conjugation)Some are parasitic

sporozoans

AMOEBAS

Protozoans with pseudopods

“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

SPOROZOANS

Produce spores

Parasitic protozoansMalaria

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

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

SLIME MOLD

WATER MOLD

ALGAE

Plant-like protists 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:Red, green, brown, golden algae

Diatoms - contain silica

Dinoflagellates

DIATOMS

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 BROWN ALGAE

DIATOMS

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