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Kingdom Protista

Kingdom Protista. The most diverse eukaryotes…. Techno Protists. Some vocab before we start…. Prokaryotic. Eukaryotic. Some vocab before we start…. Prokaryotic. Eukaryotic. Pro = before Karyo = nucleus Lack a nucleus Does not have membrane bound organelles

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Kingdom Protista

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  1. Kingdom Protista The most diverse eukaryotes…

  2. Techno Protists

  3. Some vocab before we start… Prokaryotic Eukaryotic

  4. Some vocab before we start… Prokaryotic Eukaryotic • Pro = before • Karyo= nucleus • Lack a nucleus • Does not have membrane bound organelles • Eg. Monerans - bacteria • Eu = good/true • Karyo = nucleus • Has a nucleus • Has membrane bound organelles • Eg. Plant and animal cells

  5. Unifying Characteristics • Eukaryotic • Most are unicellular and microscopic(some are colonial) • Most reproduce asexually (binary fission) • Lives in almost any environment that contains water • Move in a variety of ways • Obtain food in a variety of ways

  6. How do protists obtain food?

  7. The 7 Major Phyla As they are presented in our textbooks…

  8. 3 Categories of Protists

  9. Mnemonic Time!

  10. Plant-like Protists • contain chlorophylland carry out photosynthesis • commonly called algae • four phyla: euglenophytes, chrysophytes, diatoms, dinoflagellates • accessory pigments help absorb light, give algae a variety of colors

  11. Phylum Euglenophyta • Eugleno = good eye / Phyta = plant • Single cells • One or more flagella • No cell walls • Elastic layer called the pellicle • Has chloroplast • Autotrophic (photosynthesis) but becomes heterotropic in the absence of light • E.g. – Euglena (euglenoid flagellates)

  12. Phylum Chrysophyta • Chrys = gold / Phyta= plant • Single cells or grouped (colonies) • Motile and free floating • Cell walls (often with silica) • Chlorophyll and yellow pigment in plastids • Food stored as oil or complex carbohydrates E.g. golden algae and diatoms

  13. Flagella 3 µm Phylum Pyrrophyta • Pyrro = fire / phyta = plant • Single cells with 2 flagella • Thick cell wall • Chlorophyll and other pigments in plastids • Food stored in starch or oil • Causes “red tide” E.g. - dinoflagellates

  14. Animal-like Protists (PROTOZOA) • No cell wall • Heterotrophic(free living or parasitic) • Classified according to means of locomotioninto 4 phyla

  15. Phylum Sarcodina • Sarco = flesh • Locomotion by protoplasmic extensions called pseudopodia • Many with shells • Reproduces by fission • Can become cysts when in harsh conditions • E.g. amoeba, foraminifera

  16. Phylum Ciliophora • Cilio = eyelash / phora= bearing • Locomotion by beating of cilia • Cilia also help in feeding • Has a macronucleus and micronucleus • Reproduces by binary fission or conjugation • E.g. paramecium, vorticella, and stentor

  17. Phylum Sporozoa • Sporo = seed / Zoa= animal • Lack locomotive structures • Lack contractile vacuoles • Mostly parasitic • Have sexual and asexual life cycle stages and may infect multiple hosts e.g. plasmodium (malaria)

  18. 9 m Phylum Mastigophora • Mastigo = whip / phora= bearing • Locomotion by flagella • Absence of chlorophyll • Parasitic and saprophytic • E.g. trypanosoma (sleeping sickness)

  19. Kingdom Protista – The Protists

  20. Homework • Read front page of coloring sheet “Introduction to Protozoans” and color protozoans on back side. • Memorize names of 7 Phyla in Protista and know the literal translation of their phylum name. Entry Slip next class on reading content AND phylum names. REMINDER: DISEASE PROJECTS DUE NEXT CLASS!!!`

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