1. Protists The world of Protists: Animal-like Protists
Plant-like Protists
Fungus-like Protists
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SB3 B
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2. Standard SB3 B
Students will derive the relationship between single-celled and multi-celled organisms and the increasing complexity of systems. B. Compare how structure and function vary between the six kingdoms (archaebacteria, eubacteria, protists, fungi, plants, and animals).
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3. Essential Questions What are the 3 main types of protists?
How do the different types of protists maintain homeostasis?
How are protists more evolved than bacteria?
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4. All protists are eukaryotes
Some reproduce asexually by mitosis while others exchange genetic information through meiosis
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5. Some scientist classify protist by their method of obtaining nutrition
Classifying protists
Some scientist classify protist by their method of obtaining nutrition
Animal-like protist (Oxytricha)
Plantlike protist (Pediastrum)
Funguslike protist (slime mold)
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6. Protozoans
Animal-like Protists
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7. Amoebas Flagellates Ciliates Sporazoans
Phyla of ProtOzoans
Amoebas
Flagellates
Ciliates
Sporazoans
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8. Protozoans Basic Features: Classified by how they move:
Aquatic, unicellular
Heterotrophic: pathogens, parasites, predators
Classified by how they move:
1) Pseudopods : move w/ pseudopodia (false- feet)
Engulf by phagocytosis
Ex: Amoebas
2) Flagellates: move w/ flagella
Ex: Zooflagellates
3) Ciliates: move w/ cilia
Ex: Paramecia
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11. Amoeba movement
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12. Trichomonas foetus : cow disease
Flagellate
Trichomonas foetus : cow disease
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13. Trichomonas vaginalis: an STD
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14. Flagellate movement
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15. ciliates
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17. Ciliate movement
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18. Animal-like protist diseases
Malaria
Caused by: Plasmodium
Vector: Mosquitoes
Effects in humans: Fatigue, fever, vomiting, coma, death
Sleeping sickness
Caused by: Trypanosoma
Vector: Tsetse flies
Effects in humans: Coma & death
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19. Malaria in red blood cells
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20. Algae
Plantlike Protists
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21. Euglenoids Diatoms Dinoflagellates Red, Brown, & Green Algae
Phyla of Algae
Euglenoids
Diatoms
Dinoflagellates
Red, Brown, & Green Algae
SB3 B
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22. Plant-like protist Most unicellular; No leaves, stems, roots
Perform photosynthesis with chloroplasts
Classified by their type of cell wall
1) Euglenoids: use flagella to swim
Animal & plant-like
2) Dinoflagellates
Most (~ 90%) plankton
Basis of aquatic food chains
3) Diatoms
Glasslike shells
Provide ~ ½ the O2 on earth
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23. Plant-like protist cont.
4) Green Algae
Multicellular
Cell wall made of cellulose
5) Brown Algae
Giant Kelp forms underwater forest
Used in pudding and salad dressing
6) Red Algae
Seaweed
Used in ice cream as a thickening agent, nori- seaweed wrap for sushi, and hair conditioner
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33. Fungus-like Protists
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34. Phyla of Fungus-like Protists
Slime Molds
Water Molds
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35. Fungus-like protist Basic Features: 2 major groups: 1) Slime Molds
Decomposers: Absorb and recycle nutrients
Live in moist environments
2 major groups:
1) Slime Molds
large (~1 meter) single celled mass of cytoplasm
Fungus-like (absorbs food)
Animal-like (can move)
2) Water molds: Can be parasitic
Ex: Potato blight: caused Irish potato famine (1840’s)
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38. Slime mold movement
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40. Protists