Ch 19: Diversity of Protists. Kingdom Protista G Eukaryotes that are not animals, plants or fungi....
-
Upload
lamont-deere -
Category
Documents
-
view
216 -
download
0
Transcript of Ch 19: Diversity of Protists. Kingdom Protista G Eukaryotes that are not animals, plants or fungi....
Ch 19: Diversity of Protists
Ch 19: Diversity of Protists
Kingdom ProtistaKingdom Protista
Eukaryotes that are not animals, plants or fungi. They share some but not all of the features of plants, animals, and fungi. They can be single celled or multi
cellular, microscopic or large
Eukaryotes that are not animals, plants or fungi. They share some but not all of the features of plants, animals, and fungi. They can be single celled or multi
cellular, microscopic or large
Types of ProtistsTypes of Protists
Divided into three broad categories:Animal-like protistsPlant-like protistsFungus-like protists
Divided into three broad categories:Animal-like protistsPlant-like protistsFungus-like protists
Animal-like ProtistsAnimal-like Protists
Also known as ProtozoaUnicellular but move around,
consume other organisms, and have no chloroplasts
Also known as ProtozoaUnicellular but move around,
consume other organisms, and have no chloroplasts
Protozoa with FlagellaProtozoa with Flagella
Zooflagellates- have one or more flagella
Flagella are tail-like structures that help unicellular organisms swim
HeterotrophicOver 2000 species of
zooflagellates exist.
Zooflagellates- have one or more flagella
Flagella are tail-like structures that help unicellular organisms swim
HeterotrophicOver 2000 species of
zooflagellates exist.
Protozoa with PseudopodsProtozoa with Pseudopods
- Means fake footTemporary extension of cytoplasm
and cell membrane that helps protozoa move and feed**Amoebas are protists with
pseudopods
- Means fake footTemporary extension of cytoplasm
and cell membrane that helps protozoa move and feed**Amoebas are protists with
pseudopods
Protozoa with CiliaProtozoa with Cilia
Ciliates have cilia- short, hair-like structures that cover some or all of the cell surfaceHelp cell swim or capture
foodOver 8000 species of
ciliates **Example = Paramecium
Ciliates have cilia- short, hair-like structures that cover some or all of the cell surfaceHelp cell swim or capture
foodOver 8000 species of
ciliates **Example = Paramecium
Some Cause Infectious Diseases
Some Cause Infectious Diseases
Phylum Apicomplexa includes 4000 parasitic species
Malaria is an example of a disease caused by protozoan Plasmodium
Malaria results in fever, vomiting, kidney and liver malfunction, and if not treated coma and death
GiardiaCaused by Giardia zooflagellateCauses intestinal disease from drinking water
contaminated with feces of infected animals
Phylum Apicomplexa includes 4000 parasitic species
Malaria is an example of a disease caused by protozoan Plasmodium
Malaria results in fever, vomiting, kidney and liver malfunction, and if not treated coma and death
GiardiaCaused by Giardia zooflagellateCauses intestinal disease from drinking water
contaminated with feces of infected animals
Plant-like ProtistsPlant-like Protists Single celled or multi-
cellular Don’t have roots, stems,
leaves, specialized tissues Examples:
Phytoplankton = single celled (provide about 1/2 of the oxygen in the atmosphere)
Volvox= live in coloniesMulit-cellular include
seaweeds and kelps
Single celled or multi-cellular
Don’t have roots, stems, leaves, specialized tissues
Examples:Phytoplankton = single
celled (provide about 1/2 of the oxygen in the atmosphere)
Volvox= live in coloniesMulit-cellular include
seaweeds and kelps
AlgaeAlgae
Photosynthetic plantlike protistGreen, brown and red algae
Photosynthetic plantlike protistGreen, brown and red algae
Algal BloomsAlgal BloomsA. Caused by large input of a limiting A. Caused by large input of a limiting
nutrient nutrient (due to runoff from fertilized (due to runoff from fertilized
fields)fields) the result is an increase in the the result is an increase in the
amount of amount of algaealgae and other and other producers. producers.
Green, yellowish-brown, or red Green, yellowish-brown, or red colorcolor
B. More nutrients available = more B. More nutrients available = more producersproducers can grow and reproduce. can grow and reproduce. This sudden increase in producers can This sudden increase in producers can disruptdisrupt the equilibrium of ecosystems the equilibrium of ecosystems (throw them off balance)(throw them off balance)
A. Caused by large input of a limiting A. Caused by large input of a limiting nutrient nutrient (due to runoff from fertilized (due to runoff from fertilized
fields)fields) the result is an increase in the the result is an increase in the
amount of amount of algaealgae and other and other producers. producers.
Green, yellowish-brown, or red Green, yellowish-brown, or red colorcolor
B. More nutrients available = more B. More nutrients available = more producersproducers can grow and reproduce. can grow and reproduce. This sudden increase in producers can This sudden increase in producers can disruptdisrupt the equilibrium of ecosystems the equilibrium of ecosystems (throw them off balance)(throw them off balance)
Algal BloomsAlgal Blooms C. Why are they harmful?C. Why are they harmful?
As more algae and plants As more algae and plants grow, others grow, others diedie..This dead matter = food for This dead matter = food for
bacteria that decompose it.bacteria that decompose it.With more food available, With more food available,
the bacteria increase in the bacteria increase in number and use up the number and use up the oxygen in the water.oxygen in the water.OxygenOxygen supply decreases supply decreases
and many fish and aquatic and many fish and aquatic insects cannot survive.insects cannot survive.
This results in a This results in a dead areadead area..
C. Why are they harmful?C. Why are they harmful?As more algae and plants As more algae and plants
grow, others grow, others diedie..This dead matter = food for This dead matter = food for
bacteria that decompose it.bacteria that decompose it.With more food available, With more food available,
the bacteria increase in the bacteria increase in number and use up the number and use up the oxygen in the water.oxygen in the water.OxygenOxygen supply decreases supply decreases
and many fish and aquatic and many fish and aquatic insects cannot survive.insects cannot survive.
This results in a This results in a dead areadead area..
Diversity of Plantlike Protists
Diversity of Plantlike Protists
Euglena- large single-cells that swim with the aid of 1 or 2 flagellaCan have animal and plant features
Pellicle (flexible covering on their cell surface that allows cell to change shape)
Dinoflagellates- single cells (90% marine plankton)2 flagella (one in front and one in back)Some are bioluminescent
Produce light through a series of chemical reactions https://www.youtube.com/watch?v=o5ESHXKGBvA
Euglena- large single-cells that swim with the aid of 1 or 2 flagellaCan have animal and plant features
Pellicle (flexible covering on their cell surface that allows cell to change shape)
Dinoflagellates- single cells (90% marine plankton)2 flagella (one in front and one in back)Some are bioluminescent
Produce light through a series of chemical reactions https://www.youtube.com/watch?v=o5ESHXKGBvA
Red TidesRed Tides
D. Harmful algal blooms in oceans that cause harm through the production of toxins
D. Harmful algal blooms in oceans that cause harm through the production of toxins
DiatomsDiatoms
tiny single celled algae covered in patterned glasslike shells
tiny single celled algae covered in patterned glasslike shells
https://www.youtube.com/watch?v=-zsdYOgTbOk
https://www.youtube.com/watch?v=CibGFo0RHIw
https://www.youtube.com/watch?v=7pR7TNzJ_pA Amoeba
https://www.youtube.com/watch?v=PsYpngBG394
https://www.youtube.com/watch?v=a4aZE5FQ284
https://www.youtube.com/watch?v=-zsdYOgTbOk
https://www.youtube.com/watch?v=CibGFo0RHIw
https://www.youtube.com/watch?v=7pR7TNzJ_pA Amoeba
https://www.youtube.com/watch?v=PsYpngBG394
https://www.youtube.com/watch?v=a4aZE5FQ284