Kingdom Protista

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Kingdom Protista

• The Junk Drawer

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Three Types of Protists

• Animal-like
• Plant-like
• Fungus-like

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Animal-Like Protists

• Protozoans- Like animals, they are heterotrophs.
• Contractile Vacuole- helps expel water through
  the cell membrane
• Movement-
• Pseudopod- temporary bulges
• Cilia- tiny hair-like structures
• Flagella- whip-like tails

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Pictures of Protozoans

• Sarcodines- use pseudopods
• Ciliates- use cilia
• Zooflagellates- use flagella
• Sporozoans- no movement,
• parasites

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Plant-Like Protists

• Algae- Like plants, all algae are autotrophic
• Algae are a variety of colors because of their
  pigment- chemicals that produce color.
• Types- eugleniods, dinoflagellates, diatoms,
  green algae, red algae, and brown algae

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Eugleniods

• Can be heterotrophs when sunlight is not present.
• Have flagella to move
• Have chloroplast to capture sunlight for energy

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Dinoflagellates

• These are abundant in plankton, occasionally
  occurring in large numbers. They can occasionally
  become so numerous that the water looks red, thus
  this algal bloom (meaning there are large numbers
  of them, having nothing to do with flowers, which
  they do not have) is called Red Tide. Because
  Dinoflagellates are toxic to humans, it is not
  safe to eat shellfish (clams, etc.) collected
  where Red Tide is occurring (the Protists get
  inside the clam shell and cannot be easily
  removed). Dinoflagellates are bioluminescent,
  that is, they are able to produce light like
  lightening bugs, and at night during Red Tide,
  the crests of the ocean waves appear to glow in
  the dark.

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Diatoms

• Have beautiful glass-like walls

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Green, Red, and Brown Algae

• Green- lives in fresh water, salt water, or moist
  places
• Red and brown- live in the ocean

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Fungus-Like Protists

• Heterotrophs, have cell walls, use spores to
  reproduce
• Can move at some point in their lives
• Three types
• Water molds- grow as tiny threads
• Downy molds- grow as tiny threads
• Slime molds- live in moist soil and decaying
  plants

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Pictures of Fungus-Like Protists