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Protists

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Page 1: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protists

Page 2: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

What is a Protist?

!  “Junk drawer” Kingdom

!  Eukaryotes

!  Mostly Unicellular & Multicellular

!  Autotrophic & Heterotrophic

Page 3: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

What is a Protist?

Page 4: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Three Categories

!  Animal-like

!  Fungus-like

!  Plant-like

Page 5: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Animal-like Protists ! Heterotrophs

!   Called Protozoans

!   Four types based on how they move or live

! Protozoans with Pseudopods

! Protozoans with Cilia

! Protozoans with Flagella

!   Other Protozoans

Page 6: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protozoans with Pseudopods

!   Called Sarcodines

!   Move with pseudopods (“false foot”)

!   Have a contractile vacuole to expel extra water

!   Example: Ameba

Page 7: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protozoans with Pseudopods

Page 8: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protozoans with Cilia

!   Called Ciliates

!   Move with cilia (hair like structures)

!   Complex cells - two nuclei

!   Asexual & sexual reproduction

!   Example: Paramecium

Page 9: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protozoans with Cilia

Page 10: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protozoans with Flagella

!   Called Zooflagellates

!   Use Flagella to move (whip like structure)

! Symbiosis - interaction between two species where at least one species benefits

! Mutualism - both species benefit.

!   Example: Giardia

Page 11: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protozoans with Flagella

Page 12: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Other Protozoans

!   Called Sporozoans

! Parasites – An organism that lives on or in a host and causes harm to the host

!   Example: Plasmodium

Page 13: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Fungus-like Protists

! Heterotrophs (animal like)

!   Cell wall (Plant like)

!   Spores to reproduce

!   Examples: Water Molds, Downy Mildews, Slime Molds

Page 14: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Plant-like Protists

!   Commonly called algae

! Autotrophs

!   Live: soil, bark of trees, fresh water, salt water

!   Examples: Euglenoids, Dinoflagellates, Diatoms, Green Algae, Red Algae, Brown Algae

Page 15: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Plant-like Protists

Page 16: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protists and Us

Helpful

!   Food source to organisms

!   Makes most of earths oxygen

!   Toothpastes

!   Household scouring products

!   Swimming pool filters

!   Insecticides

!   Ice cream

!   Hair conditioner

!   Nutrient-rich delicacy

!   Thickener for pudding and salad dressing

Page 17: otists - Anoka-Hennepin School District / Homepage · Fungus-like ! Plant-like . Animal-like Protists ! Heterotrophs !

Protists and Us

Harmful

!   Parasitic to humans

!   Cause malaria

!   Attack food crops