1 / 19

Kingdom Protista

Learn about Protists - eukaryotic organisms found in water and organisms, with diverse nutrition methods, and Fungi - essential recyclers with unique feeding relationships and symbiotic roles.

szachary
Download Presentation

Kingdom Protista

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Kingdom Protista • Eukaryotic • Most unicellular, some multicellular • Range in size from a microscopic amoeba to giant seaweed • Thought to be the ancestors to all other eukaryotic kingdoms

  2. Where are Protists found? • fresh water • salt water • inside organisms

  3. Classified by the way they obtain nutrition. • Animal-likeheterotrophs • Plant-likeautotrophs • Fungus-likeexternal digestion

  4. 1. Characteristics of Animal-like Protists (aka Protozoans) • Heterotrophs • Unicellular • Classified by the way they move • Ex: pseudopods, flagella, cilia

  5. 2. Plant-like protists(aka algae or plankton) • Photoautotrophs • Contain chlorophyll - but no roots, stems, or leaves • Multi- or unicellular

  6. 3. Fungus-like Protists • Heterotrophs • Decompose dead organisms • External digestion, then absorb nutrients • Mostly unicellular Downy mildew on soybeans Slime mold

  7. Ecological Roles of Protists • Plant-like protists - produce 70% of Earth’s oxygen • Live symbiotically w/other organisms, ex. Trichonymphalive inside termites help digest wood • Fungus-like protists recycle nutrients • phytoplankton and zooplankton - food source for larger sea animals • Human uses of algae - sushi wraps, agar plates, ice cream, salad dressing, medicines, paints, polishes • Cause mildew and blight(disease) in grapes & tomatoes • Irish potato famine → immigration to US

  8. Disease Causing Protists Entamoeba – causes amebic dysentery, severe diarrhea and intestinal bleeding that can lead to death Trypanosoma – causes African Sleeping Sickness, uncontrolled sleepiness, high fever that can lead to death, transferred by the teste fly Giardia – causes Giardiasis, fatigue and diarrhea due to contaminated food. Plasmodium – causes Malaria, flu-like symptoms, transferred through infected mosquitos

  9. Kingdom Fungi • Eukaryotic • Heterotrophs - use extracellular digestion (excrete enzymes and absorb nutrients) • Cell walls made of chitin • Some unicellular (ex. Yeast) • Most multicellular

  10. Where are fungi found? Everywhere • air, water, soil • people (athlete’s foot, yeast infection, ringworm) • foods (bread-yeast, cheese, mushrooms)

  11. Fruiting body – above ground, produce reproductive spores Hyphae: threadlike filaments (one-cell thick) Mycelium - a network of hyphae below ground

  12. 3 feeding relationships • Decomposers - recycle nutrients • Parasitism - corn smut, mildews, wheat rust, yeast infections, athlete’s foot, ringworm • Mutualism - 2 examples

  13. Symbiotic Relationships of Fungus • Mycorrhizae - fungus & plant roots • Fungus covers roots increasing surface area for absorption • Plant provides food to fungi • Ex. Orchids • Lichens - fungi & algae or cyanobacteria • Algae provide food by photosynthesis while fungi provides water & minerals

  14. Fungi Reproduction • Asexual - through fragmentation (hyphae break off & grow new mycelia)or budding. • Sexual – through spores produced by fruiting body

  15. Examples

  16. Human and Ecological Importance • Decomposers - Recycle nutrients • Penicilium mold used to create antibiotics • Some used as a food source, ex. yeast

More Related