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Protists Diversity of Protists Protozoans Slime Molds Algae Ecological Role & Disease.

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Presentation on theme: "Protists Diversity of Protists Protozoans Slime Molds Algae Ecological Role & Disease."— Presentation transcript:

1 Protists Diversity of Protists Protozoans Slime Molds Algae Ecological Role & Disease

2 Diversity of Protists A. CharacteristicsCharacteristics B. Structure and FunctionStructure and Function C. Modes of Nutrition. Modes of Nutrition Click Click

3 A. Characteristics 1. Eukaryotic (have a nucleus) 2. Unicellular, multicellular, or colonial (groups) 3. Most move_

4 B. Structure and Function 1. Extremely diverse a. very complex cell structure b. perform all the functions of other eukaryotes 2. Grouped by type of nutrition_ Click

5 C. Modes of Nutrition 1. Protozoans (animal-like) a. are consumers b. classified by how they move_ Click

6 2. Slime molds (fungus-like) a. consumers- decomposers b. live in cool damp places c. feed on bacteria & decaying plant matter d. have a unique life cycle_ Click

7 3. Algae (plant-like) a. are producers b. can be unicellular or multicellular c. make up plankton communities d. can be classified by color_ Click

8 THE END

9 Protozoans A. Zooflagellates B. Sarcodinians C. Ciliaphorans D. Apicomplexans Click

10 1. Zooflagellates move by one or more flagella 2. Giardia a. contains 2 nuclei and lack mitochondria b. believed to be closely related to prokaryotes_ A. Zooflagellates Click

11 3. Trypanosoma a. causes sleeping sickness_

12 1. Sarcodinians move by extensions of the cytoplasm called pseudopodia_ B. Sarcodinians Click

13 2. Amoeba a. causes amoebic dysentery_ Click

14 3. Forams a. have porous shells made of calcium carbonate b. shell buildup forms limestone_ Click

15 4. Radiolarians_ Click

16 1. Move by hair-like extensions called cilia 2. Paramecium a. sweep food into body by cilia_ C. Ciliates Click

17 Conjugation in Paramecium

18 Conjugation ParameciaBinary fission

19 3. Stentor_

20 4. Stylonychia_

21 1. Have no way of movement a. act as parasites_ D. Apicomplexans (Sporozoa) sporozoites merozoites

22 2. Plasmodium a. causes malaria_

23 THE END

24 Slime Molds A. Plasmodial Slime Molds B. Cellular Slime Molds C. Water Molds & Mildews

25 A. Plasmodial Slime Molds 1.Plasmodial slime molds feed as a single mass of cytoplasm-plasmodium 2. When food and water supplies are low it reproduces by a fruiting body-sporangia 3. Meiosis produces haploid spores_ Click

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28 B. Cellular Slime Molds 1. Cellular slime molds feed as individual amoeba-like cells 2. When food and water supplies are low it reproduces a. forms a slug-like colony b. then fruiting body 3. Dictyostelium 3 stages: individual, colony, spore_ Click

29 C. Water Molds & Mildews 1. Water molds decompose dead organisms in water a. some are parasites b. unicellular or thin branching filaments c. sexual reproduction 2. Downy mildews are spread by the wind a. Phytophthera infestans –responsible for the Irish potato famine -clones Water molds & downy mildew more closely related to algae_ Click

30 THE END

31 Algae A. Dinoflagellates B. Diatoms C. Euglenoids D. Seaweeds

32 A. Dinoflagellates 1. Dinoflagellates a. have two flagella b. cell wall made of cellulose c. causes red tide 2. Some can produce light_ Click

33 B. Diatoms 1. Diatoms contain cell walls made of glass a. gritty, used in toothpaste and cleansers_ Click

34 C. Euglenoids 1. Euglenoids a. photosynthesize and absorb food b. lack cell wall c. eyespot helps them find light_ Click

35 D. Seaweeds 1. Seaweeds are large multicellular marine algae 2. Green algae a. are believed to be the closest relatives to plants b. volvox live in colonies c. spirogyra has spiral chloroplasts_ Click

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39 3. Red algae a. contain pigments that allow them to capture light in deep water_

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41 4. Brown algae a. giant kelp can reach up to 50 meters in length_ Click

42 THE END

43 Ecological Roles & Disease A. Ecological Role B. Disease ClickClickClick

44 A. Ecological Role 1. Provide habitat for marine life 2. Act as a major food source in the water_

45 3. Form symbiotic relationships that can help others_ Click

46 B. Disease 1. Giardia- diarrhea 2. Trypanosoma- blood diseases 3. Dinoflagellates- red tide_ Click

47 4. Amoeba- amoebic dysentery 5. Plasmodium- malaria_

48 THE END

49 Diversity of Protists A. Origin of Eukaryotes B. Characteristics C. Structure and Function D. Modes of Nutrition

50 C. Structure and Function 1. Extremely diverse a. very complex cell structure b. perform all the functions of other eukaryotes

51 Protozoans A. Zooflagellates B. Sarcodinians C. Ciliaphorans D. Apicomplexans

52 1. Sarcodinians move by extensions of the cytoplasm (pseudopodia) B. Sarcodinians

53 3. Forams a. have porous shells made of calcium carbonate b. shell buildup forms limestone

54 3. Forams a. have porous shells made of calcium carbonate b. shell buildup forms limestone

55 4. Radiolarians

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58 A. Plasmodial Slime Molds 1. Plasmodial slime molds feed as a single mass of cytoplasm 2. When food and water supplies are low it reproduces by a fruiting body

59 A. Plasmodial Slime Molds 1. Plasmodial slime molds feed as a single mass of cytoplasm 2. When food and water supplies are low it reproduces by a fruiting body

60 B. Cellular Slime Molds 1. Cellular slime molds feed as individual amoeba-like cells 2. When food and water supplies are low it reproduces a. forms a slug-like colony b. then fruiting body

61 C. Water Molds & Mildews 1. Water molds decompose dead organisms in water a. some are parasites 2. Downy mildews are spread by the wind a. responsible for the Irish potato famine

62 C. Water Molds & Mildews 1. Water molds decompose dead organisms in water a. some are parasites 2. Downy mildews are spread by the wind a. responsible for the Irish potato famine

63 A. Dinoflagellates 1. Dinoflagellates a. have two flagella b. cell wall made of cellulose c. causes red tide 2. Some can produce light_

64 B. Diatoms 1. Diatoms contain cell walls made of glass a. gritty, used in toothpaste and cleansers

65 B. Diatoms 1. Diatoms contain cell walls made of glass a. gritty, used in toothpaste and cleansers

66 B. Diatoms 1. Diatoms contain cell walls made of glass a. gritty, used in toothpaste and cleansers

67 C. Euglenoids 1. Euglenoids a. photosynthesize and absorb food b. lack cell wall c. eyespot helps them find light

68 D. Seaweeds 1. Seaweeds are large multicellular marine algae 2. Green algae a. are believed to be the closest relatives to plants b. volvox live in colonies c. spirogyra has spiral chloroplasts

69 4. Brown algae a. giant kelp can reach up to 50 meters in length

70 Ecological Roles & Disease A. Ecological Role B. Disease

71 3. Form symbiotic relationships that can help others

72 B. Disease 1. Giardia- diarrhea 2. Trypanosoma- blood diseases 3. Dinoflagellates- red tide


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