Kingdom: Protista

Phylum: Protista Eukaryotic Most are unicellular “Pond water critters”

Animal-like Protists – 4 groups 1.Zooflagellates – move with a tail called a flagella. Dinoflagellates – half are animal like and half are plant like protists Ex. Trypanosoma – (parasitic) causes African sleeping sickness.

Example: Giardia – Parasite that causes infection of small intestines. DON’T DRINK POND WATER!!!

2. Sarcodines – move and feed with pseudopods (false feet). Cytoplasmic streaming – cytoplasm flows and moves in the direction of the longest extension. Ex. Amoeba

3. Sporozoans – all are parasitic. Move in your blood stream. Can’t move on their own. Example: Plasmodium which causes malaria. Red blood cells w/ Plasmodium parasite shown

MALARIA CYCLE

4. Ciliates – move with hairs called cilia (100’s of oars on a ship). Phylum Ciliophora o Example: Paramecium

Plant-like Protists – 5 groups all are aquatic and most photosynthetic 1.Euglenophytes – They have two flagella but no cell wall. Very similar to zooflagellates.

Plant-like Protists 2. Chrysophytes –They have gold colored chloroplasts that store their food as oil.

Plant-like Protists 3. Diatoms – they have cell walls made of silicon with intricate patterns. They look like two sides of a petri dish. They produce much of the world’s oxygen and live in the ocean. After they die the shells are used as abrasives in polishes and toothpaste.

4. Dinoflagellates – They have two flagella that wrap around the organism in grooves. Most are luminescent and when agitated they give off light. In the phylum Pyrrohyta which means fire plants.

Some Dinoflagellates can cause red tides like the picture above.

And Group 5… 5. Brown, Red and Green Algae – Brown – kelp, very large, up to 100m long

Red – grow at great depths

Green They can be microscopic but they exist in large amounts so they make water look green. VOLVOX

Human Uses of Algae Can you guess what we use algae for every day?

Human Uses of Algae Oxygen!! Lots Medicines – stomach ulcers, high blood pressure, arthritis Sushi Ice Cream Salad Dressing Pudding Candy Bars Syrup Eggnog

More Human Uses of Algae Plastics Waxes Deodorants Paints Lubricants Agar

Fungus-like Protists-1 group Slime mold – can get up to 1 meter, no definite form. Moves and engulfs bacteria and dead organic matter. Reproduces by sending up spores. o Example: Plasmodium – forms a sheet or net.

Funguslike Protists Water Molds o Caused The Great Potato Famine( ) o At least 1,000,000 people died of starvation or disease. o More than 1,000,000 people migrated from Ireland to the United States