KINGDOM PROTISTA

KINGDOM PROTISTAChapter 9: Section 1 1What is a Protist??Protist- An organism that lives in a moist or wet habitatContains organisms that dont fit anywhere else!ALL PROTISTS Have a nucleus (eukaryotic)SOME PROTISTSSingle celled/Many celled Make food/Consume food 2Plantlike Protists Otherwise known as ALGAE All-contain chlorophyll make own food Some-Single-celled/many-celledAre not green b/c a different pigment covers chlorophyll Divided into 6 phyla according to their pigments and how they store food

3Plantlike Protist Phyla: Euglenophyta Common name- Euglenas Characteristics:Single-celled Pigment is chlorophyllStores food as carbohydrates No cell wall, but thick layer inside cell membrane Moves using flagella (whip like tail)Has an eyespot that respond to light 4Euglena!

5Plantlike Protist Phyla: ChrysophytaCommon name- DiatomsCharacteristics:Single-celled Stores food as oilGolden-brown pigment & chlorophyll Cell wall is a glasslike shell made from silica

6 Diatoms!

7Plantlike Protist Phyla: PyrrphytaCommon name: Dinoflagellates Characteristics:Single-celled Stores food as oil & starch Red pigment & chlorophyll Move with 2 flagellum causing it to spin Many produce a chemical that causes them to glow!

8Dinoflagellates!

9Plantlike Protists Phyla: Chlorophyta Common name: Green Algae Characteristics: Single-celled and many-celled Store food as starch Contains only chlorophyll 10Green Algae!

11Plantlike Protist Phyla: RhodophytaCommon name: Red Algae Characteristics: Most are many- celled Store food as starch Contain red pigment that absorbs minimal light 12Red Algae!

13Plantlike Protist Phyla: PhaeophytaCommon name: Brown AlgaeCharacteristics:Many-celled Store food as starch Brown pigments & chlorophyll 14Brown Algae!

15Algae and You!

Diatom shells are used in paints & make up (make it shiny) and toothpaste (make it abrasive) Red Algae is used in pudding and toothpaste (makes them creamy & smooth)Brown Algae is used in ice cream & marshmallows (makes thick) and is eaten in sushi & salads

16Algae is also important forA main food source for herbivores of the water Provides oxygen through photosynthesis

17Animal-like Protists Otherwise known as PROTOZOA All single-celled organisms Cant make their own food (heterotrophs) Contain special vacuoles for digesting food & ridding excess water Four phyla based on method of movement

18Animal-like Protist Phyla: Sacrodines Common name: The Amoebas Use a temporary extension of the cytoplasm called a pseudopod to:Move- extend a section out and drag forward Eat- extension surrounds the food particle (endocytosis)

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20Animal-like Protist Phyla: Zoomastigina Common name: Flagellates Move by whipping one or more flagella

21Animal-like protist phyla: Ciliophora Common name: Ciliates Move by using cilia Short threadlike fibers that beat back/forth Have two nuclei Feed through an oral groove

22Ciliate (Paramecium)

23Animal-like protist phylum: Sporozoa Have no way of moving on their ownOnly survive as a parasite

Plasmodium is the protist that causes Malaria 24Importance of protozoa Good- Consuming bacteria Example: Waste water treatmentBad- Disease causing Examples: African Sleeping Sickness, Malaria, dysentery (diarrhea)

The amoeba that causes acute diarrhea!Trysanopoma among red blood cells in someone with Sleeping Sickness 25Fungus-like protistsHave features of protists and fungiALLReproduce using spores Obtain energy from decomposing organic materials

26Fungus-like protist: Slime MoldAt times use pseudopods to move and feed like an amoeba Most of their life is spent acting like a fungusFeeding on decaying matter and producing spores

27Fungus-like protists: Water molds & Downy Mildew Protist like b/c reproductive spores have flagellum to moveFungus like b/c they grow as a mass of threads over a plant or animal, digest it and then absorb its nutrients

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