Protist notes

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Warwick HS Biology

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Protist notes

  1. 1. Kingdom Protista
  2. 2.  If you look at a drop of pond water under a microscope, all the "little creatures" you see swimming around are protists.
  3. 3.  All protists have a nucleus and are therefore eukaryotic.  Protists are either plant-like, animal-like or fungus-like.
  4. 4. Three Types of Protists  Plant-like protists are autotrophs  Animal-like and fungus-like protists and are heterotrophs.
  5. 5.  Protozoans are animal-like protists (heterotrophs) grouped according to how they move.  The word protozoa means "little animal.“  One group of animal-like protists are amoebas. Animal-like Protists
  6. 6. 7. Contractile Vacuole Ectoplasm Endoplasm Nucleus Food Vacuole Cell Membrane Pseudopod
  7. 7.  The second group is the Flagellates <flah- geh-lets>, of the phylum Zoomastigina. Flagellates are generally the smallest of the protozoa and have one or several long, whip-like projections called flagella poking out of their cells.  Flagellates use their flagella to move. Flagellates
  8. 8. Giardia
  9. 9.  The third group of protozoans are the ciliates from the phylum Ciliophora. These are generally the largest protozoa.  They are covered with hair-like projections called cilia and they eat the other two types of protozoa as well as bacteria.  Ciliates are found in every aquatic habitat. Ciliates
  10. 10. 8. Cilia 9. Contractile Vacuole 15. Contractile Vacuole 10. Food Vacuole 11. Macronucleus 12. Micronucleus 13. Oral Groove 14. Cytoplasm 16. Cell Membrane
  11. 11. How do Protozoans reproduce?  Asexual – Binary fission  Sexual - Conjugation
  12. 12.  The last of the Protozoans come from the phylum, Sporozoa.  These are parasitic and nonmotile.  For example…… Sporozoa
  13. 13.  Plant-like protists are algae.  Algae are eukaryotic autotrophs.  They, along with other eukaryotic autotrophs, form the foundation of Earth’s food chains.  They produce much of Earth’s oxygen. Algae
  14. 14.  There are three unicellular phyla of algae:  Phylum Euglenophyta  Phylum Bacillariophyta  Phylum Dinoflagellata
  15. 15.  Members of first phylum of algae, Euglenophyta, are both plant-like and animal- like.  Euglena are autotrophs since they make food from sunlight  Heterotrophs since they ingest food from surrounding water. Euglena
  16. 16. Euglena Flagella Eyespot Contractile Vacuole Chloroplasts Nucleus Cytoplasm Contractile Vacuole
  17. 17.  The third unicellular algae, Dinoflagellata, are a major component of marine phytoplankton.  These algae have at least two flagella set at right angles to each other and thick cell walls made of cellulose plates.  Blooms of dinoflagellates cause “Red Tide.” Dinoflagellates
  18. 18.  They are in many food chains & food webs.  Plant-like ones provide oxygen as well as food.  Fungi-like ones help as decomposers (recycle).  Some cause diseases

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