Kingdom Protista

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KingdomProtista
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Protists

• ENDOSYMBIOTIC THEORY
• Early eukaryotes developed symbiotic
  relationships with prokaryotic cells
• Prokaryotic cells lived inside eukaryotic cells
• Over time, the smaller prokaryotic cells evolved
  with the eukaryotic cells to become mitochondria
  and chloroplasts

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Basic Characteristics of the Kingdom Protista

• What are PROTISTS??
• 1. Eukaryotic- it has a nucleus and membrane
  bound organelles
• 2. Unicellular
• (except ALGEA is multicellular)
• Protists are separated into three groups
  according to how they obtain energy.
• Major classes of protists
• Animal-like protists
• Plant-like protists
• Fungus-like protists

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Plant-like Protists

• All are autotrophic-meaning they can make their
  own food
• Examples
• Euglena
• Algae

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Euglena
Draw and Label the Euglena

• Euglena contain chloroplasts, a flagella, and
  an eyespot to sense where light is.
• Unique because they are both heterotrophic and
  autotrophic.

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More Euglenas
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Multicellular Algae

• Are not generally true multicellular organisms,
  but rather "colonies"
• Show beginnings of specialized functions /
  tissues
• 3 types
• Green algae
• Red Algae
• Brown algae

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Red algeal bloom
Brown Algea Giant Kelp Forest
Volvox a green colonial algae
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Animal-like Protists

• Are all heterotrophs
• Classified by how they move.
• Examples
• Amoeba
• Paramecium

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Amoeba
Pseudopods
Found in freshwater
Moves using pseudopods- false feet- cytoplasmic
projections
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They also use pseudopods for feeding
Paramecium
Amoeba
Pseudopod
Food Vacuole
Pseudopod
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Draw and label the Amoeba
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More amoebas
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-Move using Cilia
Paramecium
Have contractile vacuoles to pump out freshwater
diffusing in due to osmosis.
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Paramecium- move using cilia (tiny hairlike
projections)
Draw and Label the Paramecium Your teacher will
be coming around to check!!!!
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More Paramecium
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Fungus like Protists

• Fungus like Protists
• All are external heterotrophs.
• Act as decomposers
• Often have a slimy appearance/texture, hence
  their name.
• 2 types
• Slime molds
• Water molds

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Water molds

• Water molds
• Completely aquatic
• Often decomposers
• Sometimes parasitic

Water mold attacking a fish
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Slime molds upclose
Water and Slime molds are not in the Kingdom
Fungi because their cell walls are made up of
cellulose not chitin.
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Next step!

• Flip your notes over, and complete numbers 1
  through 5.
• This will be essential for your next assignments.