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Protists Diversity of Protists Protozoans Slime Molds Algae

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Presentation on theme: "Protists Diversity of Protists Protozoans Slime Molds Algae"— Presentation transcript:

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

2 B. Structure and Function C. Modes of Nutrition
Diversity of Protists A. Characteristics B. Structure and Function C. Modes of Nutrition “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 1. Protozoans (animal-like) a. are consumers
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 b. can be unicellular or multicellular
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. Zooflagellates 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_ “Click”

11 3. Trypanosoma a. causes sleeping sickness_

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

13 a. causes amoebic dysentery_
2. Amoeba a. causes amoebic dysentery_ “Click”

14 a. have porous shells made of calcium carbonate
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
C. Ciliates 1. Move by hair-like extensions called cilia 2. Paramecium a. sweep food into body by cilia_ “Click”

17 Conjugation in Paramecium

18 Conjugation Paramecia
Binary fission

19 3. Stentor_

20 4. Stylonychia_

21 D. Apicomplexans (Sporozoa) 1. Have no way of movement a. act as parasites_ 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
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 1. Cellular slime molds feed as individual amoeba-like cells
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 1. Water molds decompose dead organisms in water a. some are parasites
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 b. cell wall made of cellulose c. causes red tide
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 1. Diatoms contain cell walls made of glass
B. Diatoms 1. Diatoms contain cell walls made of glass a. gritty, used in toothpaste and cleansers_ “Click”

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

35 1. Seaweeds are large multicellular marine algae 2. Green algae
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 a. giant kelp can reach up to 50 meters in length_
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 “Click”

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 2. Trypanosoma- blood diseases 3. Dinoflagellates- red tide_
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 B. Sarcodinians 1. Sarcodinians move by extensions of the cytoplasm (pseudopodia)

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

56 4. Radiolarians

57 4. Radiolarians

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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