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The weird, Wacky, wonderful world of… Kingdom Protista!

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1 The weird, Wacky, wonderful world of… Kingdom Protista!
Animal-like Protists Plant-like Protists Fungus-like Protists

2 What is a protist?? A eukaryote that is NOT a member of…
Kingdom Animalia Kingdom Plantae Kingdom Fungi …because it does not meet the requirements for these Kingdoms.

3 Protist Diversity Approximately 200,000 species
They come in different shapes, sizes, and colors! All are eukaryotes – they have a nucleus and membrane-bound organelles

4 Protozoans: Animal-like Protists

5 Protozoans What does “zoa” mean?
Unicellular – made up of one cell. (How is this different from animals?) Heterotrophs – they eat other organisms or dead organic matter Classified by how they move

6 Sarcodines (Amoebas) Zooflagellates Ciliates Sporozoans
Phyla of Protozoans Sarcodines (Amoebas) Zooflagellates Ciliates Sporozoans

7 Sarcodines (Amoebas) No cell wall
Move using pseudopods – plasma extensions (what does the word mean??) Engulf bits of food by flowing around and over them




11 Zooflagellates Use a whip-like extension called a flagella to move around quickly Some cause diseases

12 Trichomonas foetus : cow disease

13 Trichomonas vaginalis: an STD

14 African Sleeping Sickness (Trypanosoma)

15 Ciliates Move through water by beating tiny hairs called cilia.
Ciliates (like a paramecium) are found in fresh and salt water. Not parasitic! Contractile vacuole pumps water out of cell


17 Paramecium caudatum


19 Sporazoans: the parasiteS
Non-motile - Do not move on their own. Live inside a host One type called Plasmodium causes the disease malaria.

20 The mosquito is the host for the sporozoan
The mosquito is the host for the sporozoan. When the mosquito bites a person, they can get malaria.

21 Malaria in red blood cells


23 Algae Plant-like Protists

24 What are Algae? Can be Unicellular or Multicellular
Photosynthetic – make their own food No roots, stems, or leaves Each has chlorophyll and other photosynthetic pigments

25 Euglenaphytes Diatoms Dinoflagellates Red, Brown, & Green Algae
Phyla of Algae Euglenaphytes Diatoms Dinoflagellates Red, Brown, & Green Algae

26 Euglenaphyta Unicellular Aquatic
Move around like animals with two flagella No cell wall (unlike plants!) Can ingest food from surroundings when light is not available (So, they are autotrophs OR heterotrophs!)


28 Diatoms Unicellular & photosynthetic
Abundant and beautiful – like little jewels! Cell walls have patterns and lines Their cell walls are made of silicon (Si) Photosynthetic pigment called carotenoids – give them a golden color



31 Dinoflagellates: The Spinning Ones
Unicellular protists Spin around using two flagella Some are photosynthetic and some are heterotrophic Some are bioluminescent! Some kinds are responsible for red tides – toxic “blooms” of dinoflagellates that can be dangerous.

32 Red tides caused by toxic dinoflagellates
Red tides caused by toxic dinoflagellates. This red tide killed some fish.

33 Some dinoflagellates create their own light
Some dinoflagellates create their own light. This is called bioluminescence. These pictures were taken in Puerto Rico in a place called “Bioluminescent Bay”.

34 Red Algae Reddish seaweeds Live in ocean Multicellular
Have red and blue pigments, so they are autotrophs


36 Brown Algae Multicellular brown seaweed
They have air bladders to help them float at the surface (where the light is located!). Examples: Giant Kelp (where sea otters hide), Sargassum



39 Green Algae Lives in fresh and saltwater Unicellular and multicellular
Live alone or in groups called colonies Very similar to plants - perhaps the ancestors of plants!

40 Multicellular Unicellular & Colonial

41 Fungus-like Protists

42 Characteristics in Common
All form delicate, net-like structures on the surface of their food source Obtain energy by decomposing organic material (heterotrophs)


44 Phyla of Fungus-like Protists
Plasmodium Slime Molds Cellular Slime Molds Water Molds & Downy Mildews

45 Slime Molds Live in cool moist, shady places where they grow on damp, organic matter Very gross, colorful, and super cool

46 PlasmodiAL Slime Molds
Form plasmodium: a mass of cytoplasm that contains many diploid nuclei but no cell walls or membranes – its feeding stage Creeps by amoeboid movement – 2.5 cm/hour

47 PlasmodiAL Slime Molds continued…
May reach more than a meter (!!!) in diameter Form reproductive structures when surroundings dry up Spores are dispersed by the wind and grow into new plasmodium

48 6-Vomit Slime Mold (why would someone name it this?!)

49 Dog Vomit Slime Mold

50 Often, slime molds grow on mulch because it is so high in organic nutrients.

51 Cellular Slime Molds In feeding mode, they exist as individual amoebic cells When food becomes scarce, they come together with thousands of their own kind to reproduce May look like a plasmodium


53 Beautiful and colorful slime molds!! 


55 Water Molds & Downy Mildews
Live in water or moist places Feed on dead organisms or live as plant parasites Fuzzy white growths


57 Water mold growing on a dead mayfly larvae



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