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Plants & Protists

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Plants & Protists Plants & Protists Presentation Transcript

  • Bellringer Cancelled on Short Week
  • Agenda
    Collect Homework
    Cell Metaphor Assignment
    Notes: Plants & Protists
    Specialized Plant Organelles
    Protists: Jack of All Trades
  • Plant Specific Organelles
    Plants cells have all of the organelles that Animal cells do.
    They also have a few organelles that animals do not have.
    Cell Wall
    Chloroplasts
    Central Water Vacuole
  • Cell Wall
    The cell wall surrounds the membrane of plant cells.
    It is made of a tough, fibrous material called cellulose.
    It provides support and protection for the cell.
  • Chloroplasts
    Chloroplasts are the organelles where photosynthesis occurs.
    Photosynthesis is when light energy is captured and used to combine water and carbon dioxide into glucose (sugar).
  • Central Water Vacuole
    The central water vacuole is a large vacuole in plants that stores water.
    It also keeps turgorpressure, which is the pressure exerted on the cell wall that helps a plant remain upright.
  • BrainPOP: Cell Types
  • Protists
    Protists are very diverse lifeforms.
    They are eukaryotic organisms that may be unicellular or multicellularand may be consumers or producers.
    There are 3 categories of protists
    Animal-Like
    Plant-Like
    Fungus-Like
  • Protozoans (Animal-Like)
    Unicellular, so similar to bacteria
    Eukaryotic, so similar to plants & animals
    Protozoans move by use of flagella, cilia, or pseudopods.
  • Pseudopod Movement
    Pseudopods are also called ‘false feet’
    Cell membrane pushes in one direction & the cytoplasm flows into the bulge. The protozoan moves by dragging the rest of the cell behind it.
    Pseudopods can also be used to surround and trap food
  • Pseudopod Feeding
  • Ameoba Movement Video
  • Algae (Plant-Like)
    Some algae are multicellular, so they are similar to plants (kelp/seaweed)
    Euglena are unicellular algae that perform photosynthesis, but will act like consumers when there is no sunlight
  • Euglenoid Video
  • Slime Molds (Fungus-Like)
    These “blobs” are decomposers who move to feed on dead material
    Like plants these have cell walls, but the wall is not made of cellulose
  • Slime Mold Video
  • Summary
    Plants Cells Contain:
    Chloroplasts
    Cell Wall
    Central Water Vacuole
    Protists
    Animal-Like (Protozoans)
    Plant-Like (Algae)
    Fungus-Like (Slime Molds)