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Protista.

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Presentation on theme: "Protista."— Presentation transcript:

1 Protista

2 I. Protista A. Structure 1. Live in water 2. Huge variety
A. Plant-like B. Animal-like C. Decomposers

3 3. Variety of sizes A. Microscopic the size 100 um to giant seaweed 100 m

4 4. Variety of shapes A. Symmetrical B. Asymmetrical

5 5. All are Eukaryotes A. Membrane bound nucleus
B. Membrane bound organelles C. Can either be Multicellular or Unicellular

6 B. Origin and diversity 1. Been around for 1.5 BY
2. So many that we would need 20 kingdoms to correctly classify them

7 3. Easiest way to classify is by the way they eat
A. Animal like- heterotrophs B. Plant like- autotrophs C. Fungus like- heterotrophic on dead matter

8 C. Animal-like Protists
1. Protozoan (4 types) Put into different categories by the way they move A. Sarcodinians (Can or Can not have Tests—Shells) Move by psuedopods “False Feet” Ex: Ameba No shell Can form a hard cyst for protection in a drought Causes dysentery

9 B. Zooflagellates 1. Has flagella for movement 2. Trichonympha live in the guts of termites a. Mutualistic

10 C. Ciliopharans 1. Most numerous and diverse 2. Cilia (hair like projections) 3. Fresh water 4. Form cysts in hard times 5. Mostly harmless, some can be parasitic Paramecium

11 D. Sporozoans 1. Parasitic protozoa's 2. Plasmodium (Malaria) Life cycles in both humans and mosquito's

12 D. Plant like 1.Divided into two groups. 2. Algae Multicellular
Unicellular 2. Algae A. Perform photosynthesis 1. Contain chlorophyll

13 2. Unicellular Dinoflagellates-live in ocean and have 2 flagella

14 Diatoms-Cell walls, contain oil to float on water

15 Euglenoids-No cell wall, has chloroplasts and photosynthesize

16 3. Multicellular A. Parts that resemble plants Classified by color 1. Green Algae (chlorophyta) Chlorophyll b Mostly symbiotic Fresh water

17 2. Red Algae (Rhodophyta)
Live in warm salt water Near surface or at depths of 260 meters Can collect light at great depths

18 3. Brown Algae (Phaeophyta)
Cool salt water Giant kelp (100 meters long)

19 B. Reproduction of Algae
Alternation of generations Alternate between sporophyte and gametophyte

20 C. Fungus-like MOLD 1. Characteristics A. Damp and watery places
B. Break down dead matter C. Divided into slime molds or water molds

21 1. Plasmodium slime molds
Single celled with many nuclei Can grow to be the size of the palm of your hand

22 Cotton like stuff on your food
2. Water molds Cotton like stuff on your food Few are parasites


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