1. Kingdom Protista

2. What are protist? What are the classifications of Protist? Eukaryotes
Mostly Unicellular Organism
Evolved from the symbiosis of several cells of Archaebacteria
What are the classifications of Protist?
Heterotrophs
Animal – like Protozoa (classified by locomotion)
Fungus – like Protist (absorb nutrients from dead/decaying organisms)
Autotrophs
Plant – like Protist (unicellular and plant like protist)

3. Protist Phylums Phylum Sarcodina
Free living- Fresh or brackish water, bottom dwellers
Parasitic
Pseudopod: temporary cytoplasmic projection
Food vacuoles, some have shells
Use pseudopods to take in food by phagocytosis
Use psedopods for movement and feeding (phagocytosis)
Example: Amoebas, Foraminiferan, Heliozoan

4. Parts of the amoeba

5. Protist Phylums Phylum Ciliophora (Ciliates)
Free living- Fresh and salt water
Have two nuclei: Micronucleus and Macronucleus
Contractile vacuoles, gullet, cilia
Use cilia to sweep food particles into the gullet
Use cilia for movement (short hair like-projections)
Example: Paramecium

7. Protist Phylums Phylum Zoomastiginia Free living – lakes or streams
Symbiotic relationship with host
One or 2 flagella to swim
Feed by absorbing nutrient
Example: Trypanosoma
Causes sleeping sickness spread by tsetse fly
Giardia

9. Protist Phylums Phylum Sporozoa Habitat – host organism Sporozoites
Live off the host. Infects and destroys RBC
No locomotion
All parasites with complex life cycles
Example: Plasmodium (causes malaria)

11. Bellwork
What uses do humans have for genetically engineered bacteria?
What ways do we keep bacteria from growing on our food?
How do we differentiate between animal-like protist?

12. Plant – like Protist Unicellular Algae
Photosynthesis using chlorophyll and other pigments (absorb different light wavelengths)
The base of the food chain in oceanic life

13. Euglenophyta Special Structures two flagella Eyespot
pellicle (cell membrane)
no cell wall
Chloroplast
Contractile Vacuoles
Example
Euglena

14. Chrysophyta Special Structures Pectin – carbohydrate in cell wall
Some have cellulose
Examples
golden algae – gold color
Yellow-green algae

15. Bacillariophyta Special Structures silicon dioxide cell walls
Intricate designs
Examples
diatoms

16. Pyrrophyta Special Structures 2 Flagella – wrap around the organism
Bioluminescence – chemical light
Examples
dinoflagellates

17. Plant – like Protist Phytoplankton
Small photosynthetic organisms close to the surface
Carry out half the photosynthesis in the world
(Important source of oxygen for the atmosphere)
Base of aquatic food chains

18. Plant – like Protist Algal Blooms
Rapidly growing algal populations in response to sewage (nitrogen) and other organic materials
Blooms remove nutrients from water, this causes death of other organisms
RED TIDE: and algal bloom that causes shell fish poisoning. !!!!!!
Satellite Photo Barents Sea

19. Plant – like Protist Multicellular Plant – like Protist
Red algae – grow the deepest due to certain pigments
Phycobilins- red pigments
Brown Algae – largest and most complex algae
Chlorophyll A & C
Fucoxanthin – brown accesory pigment
Example: Kelp and Sargassum weed –
have blades (leaf like),
stipes (stem – like),
bladders (gas filled for floating)
hold fast (root – like)
Green Algae
Have cellulose in cell walls; considered plant-like; store food as starch
Chlorophyll A & B
Example: Sea Lettuce

20. Uses of Algae
Base of food chain in the ocean (make for diversity in ocean)
Production of Earth’s oxygen
Source of Vitamin C and Iron
Chemicals used to treat stomach ulcers, high blood pressure and arthritis
Food and food additives – thickeners and texturerizers of ice cream, salad dressings, and candy
Used to make plastics, waxes, and transistors
Agar- used in labs to thicken nutrient, to grow bacteria

21. Fungus-like protists include slime molds and water molds
decomposers, like fungi
can move, like animals 21

22. Eukaryotic organisms: fungus-like and animal-like
Slime molds
Eukaryotic organisms: fungus-like and animal-like
Decomposers, can move 22

23. Water molds are freshwater, fungus-like protists.
one type of water mold caused Great Potato Famine of Ireland in the 1800’s
made of branching strands of cells
can be parasites of plants or fish 23