1. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

2. 28.12. Stramenopile flagella

3. Powdery mildew

4. 28.17. The life cycle of a water mold

5. 28.17. The life cycle of a water mold

6. 28.17. The life cycle of a water mold

7. Zoospore release

8. Water mold: Oogonium

9. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

10. Absorption spectra for different algal pigments

11. 28.3. Diatoms: Diatom diversity (left), Pinnularia (left)

12. Diatom shell

13. 28.13. Freshwater diatoms (colorized SEM)

14. Diatoms (Bacillariophyta)
Cyclotella
Navicula

15. water molds (oomycetes)
You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, with well-developed organelles and two nuclei, one large and one small. You conclude that this organism is most likely a member of which major group?
diatoms
amoebozoans
red algae
ciliates
water molds (oomycetes)

16. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

17. 28.14. Dinobryon. A colonial, freshwater golden alga
Yellow (carotene) and brown (xanthophyll) pigments
Dinobryon. A colonial, freshwater golden alga

18. 28.15. Brown Algae: Kelp forest

19. Kelp forest

20. 28.16. The life cycle of Laminaria: an example of alternation of generations

21. 28.26. The life cycle of Laminaria: an example of alternation of generations
Isomorphic alternation of generations
Heteromorphic alternation of generations

22. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

23. Protistan Diversity (see book p. 598)

24. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

25. Chlorarachniophytes
Acquired chloroplasts via secondary endosymbiosis

26. 28.3. Foraminiferan (forams) will snail-like shell and thread-like pseudopodia
Calcium carbonate shells

27. radiolarians

28. Radiolarian skeleton
Silica shells

29. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

30. Absorption spectra for different algal pigments

31. Red algae: Rhodophyta
Chromatic adaptation

32. 28.20.
Edible seaweed (red algae)

33. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

34. 28.21 Colonial and multicellular chlorophytes: Volvox (left), Caulerpa (middle) and Ulva (right)

35. Spirogyra conjugating

36. 28.22. The life cycle of Chlamydomonas: Example of isogamy

37. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

38. Amoeba
pseudopodium

39. Amoebas: Use of pseudopodia for feeding

40. 28.3 A phylogenetic hypothesis of eukaryotes (see book page 578)

41. Plasmodial slime mold

42. 28.24. The life cycle of a plasmodial slime mold, such as Physarum

43. Slime mold Sporangia

44. 28.25 The life cycle of a cellular slime mold (Dictyostelium)

45. Dictyostelium life cycle

46. 28.27. Protists play key roles in ecological relationships
(and in public health)
Protists are key producers in aquatic communities. Up to 25% of the world’s photosynthesis is performed by protists.
Organisms in aquatic communities depend on photosynthetic protists for food

47. 28.7. Protists play key roles in ecological relationships
(and in public health)
High water temperatures (global warming) and pollution cause corals to expel their symbiotic dinoflagellate protists
This results in coral bleaching and, eventually coral death

48. 28.7. Protists play key roles in ecological relationships
(and in public health)
Some examples of parasitic Protists Entamoeba histolytica Entamoeba coli Entamoeba gingivalis Endolimax nana Iodamoeba butschlii Naegleria fowleri Giardia lamblia (intestinalis) Chilomastix mesnili Trichomonas vaginalis Leishmania donovani Leishmania tropica Leishmania braziliensis Trypanosoma gambiense and rhodesiense (African trypanosomiasis) Trypanosoma cruzi (American trypanosomiasis) Plasmodium spp. (Malaria) Toxoplasma gondii Pneumocystis carinii CryptosporidiumSpp spp. Balantidium coli
Entamoeba histolytica (amebic dysentery)

49. Summary of key concepts (see book p. 598-599)

50. Each of the following groups includes many planktonic species EXCEPT
golden algae.
forams (foraminiferans).
dinoflagellates (Pyrrhophyta).
kinetoplastids.
diatoms.