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1 Living organisms are classified into 3 Domains 1.Bacteria 2.Archaea 3.Eukarya 4 Kingdoms in this Domain.

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Presentation on theme: "1 Living organisms are classified into 3 Domains 1.Bacteria 2.Archaea 3.Eukarya 4 Kingdoms in this Domain."— Presentation transcript:

1 1 Living organisms are classified into 3 Domains 1.Bacteria 2.Archaea 3.Eukarya 4 Kingdoms in this Domain

2 2 Domain Eukarya has 4 Kingdoms 1. Kingdom Protista 2. Kingdom Fungi 3. Kingdom Plantae 4. Kingdom Animalia

3 3 Kingdom Protista Believed to have evolved as the first eukaryotes. Believed to have evolved as the first eukaryotes. Organisms in this group just dont fit perfectly into any other Kingdom in the Domain Eukarya. Organisms in this group just dont fit perfectly into any other Kingdom in the Domain Eukarya.

4 4 Most protists are unicellular, but some multicellular Asexual reproduction is common, but sexual reproduction also occurs. Most diverse group of organisms of any kingdom.

5 5 3 Divisions of Protist Plant-like protist Plant-like protist Animal-like protist Animal-like protist Fungus-like protist Fungus-like protist

6 6 Diversity of Protista 3 Major Divisions 1 st Plant-like Protist Phytoplankton Algae (Sea Weed) EuglenoidsRed Algae DiatomsBrown Algae DinoflagellatesGreen Algae Unicellular Multicellular

7 7 2nd Division of Protista Animal Like Protist or Protozoa Animal Like Protist or Protozoa Amoebas Amoebas Flagellates Flagellates Ciliates Ciliates Sporozoans Sporozoans

8 8 3 rd Division of Protista Fungus-Like Protist Fungus-Like Protist Slime Molds Slime Molds Water Molds Water Molds Downy Mildews Downy Mildews

9 9 15 phyla, based on the way they obtain energy.

10 10 PLANT-LIKE PROTIST It is thought that these Evolve into Plants with specialized cells and tissues

11 11 Phylum Chlorophyta Green Algae Spirogyra 7000 species of Chlorophyta

12 12 Phylum Chlorophyta Green Algae Spirogyra is a filamentous green algae. They form end-to-end chains of cells. Often found on the surfaces of ponds. Conjugation (similar to bacterial conjugation)

13 13 Phylum Chlorophyta: Green Algae Multicellular green algae Chara is a stonewort, the type of green algae believed to be most closely related to plants.

14 14 Phylum Chlorophyta Green Algae Volvox is a colonial green alga which has many individuals living together

15 15 Green Algae Pediastrum, a flat colony of green algae Pediastrum, a flat colony of green algae

16 16 Phylum Rhodophyta Red Algae Commercial importance of red algae: Agarlaboratory use, gelatin used in Petri dishes Carrageen thickening agent in commercial products Porphyra--sushi

17 17 Phylum Phaeophyta Brown Algae Underwater forests habitats Kelp food, habitats for aquatic organisms Pectinused to make gelatin

18 Brown Algae-Kelp 18

19 19 Phylum Bacilariophyta: Diatoms or Golden Algae Silicathe shells of these organisms are used to make glass, concrete, Diatomaceous earth -dead diatoms settle to seafloor, collected and used in abrasives Plankton abundant food source for marine organisms

20 20 Diatoms

21 21 More Diatoms

22 22 Phylum Dinoflagellata: Spinning Algae-2 flagella for movement Some are bio- luminescent Some Symbiotic Some Parasitic Red tidepopulation explosion of certain types of dinoflagellates. Kills large amounts of fish. Depletes water of oxygen and releases toxins into the water.

23 23 Red Tide-Dinoflagellates The toxins produces by the Red Tide can make humans sick. Harvesting shellfish is banned during this time.

24 24 More Dinoflagellates

25 25 And more Dinoflagellates

26 26 Phylum Euglenophyta Freshwater This phylum is a typical example of the difficulties in categorizing protists: 1/3 have chloroplasts, the other 2/3 do not. No sexual reproduction. Longitudinal fission. Propels the body through water.

27 27 Many Euglena!

28 28 ANIMAL-LIKE PROTIST It is thought that these evolve into of Animals with multicellularity and specialized cells and tissue

29 29 Phylum Zoomastigina: Move by Flagella Trypanosoma transmitted by the bite of a tsetse fly, cause African Sleeping Sickness. Animal- like protists Parasite

30 30 Trypanosoma are Flagellates which cause African Sleeping Sickness Transmitted to their human hosts by a tsetse fly Below: Trypanosoma in a sample of human blood X 400.

31 31 More Flagellates Zoomastigina Some are helpful and live in the gut of termites and digest wood Search Results

32 32 More Flagellates Phylum Zoomastigina Giardia Lamblia Attaches to intestinal tract and causes diarrhea Other flagellates are known to spread sexually by infecting the vagina and urethra of women, and the prostate, seminal vesicles and urethra of men. Example: Trichomoniasis Animal- like protists Can become infected by drinking contaminated water from stream

33 33 Phylum Rhizopoda-Amoebas Move by Pseudopodia Phylum Rhizopoda- amoebas, including Entamoeba hystolytica Phylum Foraminifera- calcium carbonate shell Phylum Actinopoda- radiolarians Trivia White Cliffs of Dover, Egyptian pyramids

34 34 Amoeba The projections are called pseudopods or false feet.

35 35 Amoeba?

36 36 Phylum Ciliophora or Ciliates Move by Cilia Very diverse group; very complex single-celled organisms which use cilia for movement.

37 37 Ciliate-Paramecium

38 38 Ciliate-Stentor

39 39 Ciliate-Vorticella

40 40 Phylum Sporozoa-Parasite Life cycle of Plasmodium vivax, which Causes malaria Carried by the Anopheles mosquito

41 41 Fungus-Like Protist Thought to evolve into Fungus

42 42 What are Fungus-Like Protists? Organisms which have some fungus-like features Organisms which have some fungus-like features Heterotrophic Heterotrophic Decompose organic material Decompose organic material

43 43 Types of Fungus Like Protist: Slime molds, Water Molds, and Downy Mildews

44 44 Slime Mold

45 45 Slime Mold Body with reproductive Sporangia Stalks

46 46 Dog Vomit Slime Mold

47 47 More Slime Mold

48 48 More Slime Mold

49 49 Orange Slime Mold Orange Slime Mold

50 50 Fungus like Protist

51 51 Downy Mildews

52 52 Summary of Protista Kingdom Most diverse group, autotrophic and heterotrophic Most diverse group, autotrophic and heterotrophic Eukaryotes, single celled and multicelled Eukaryotes, single celled and multicelled Some move by: flagella, pseudopodia, cillia Some move by: flagella, pseudopodia, cillia Some are parasites Some are parasites Reproduction both asexual and sexual Reproduction both asexual and sexual Some are harmless, some cause sleeping sickness, malaria and STDs Some are harmless, some cause sleeping sickness, malaria and STDs


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