20-3 Plantlike Protists: Unicellular Algae

1. There are _____________ major phyla of algae classified according to a variety of __________________ characteristics.
2. List the four phyla that are unicellular. _______________________________________________________________________________________
3. One of the key traits used to classify algae is the _______________ ______ __________________
pigments they contain.
4. What is the major difficulty for algae? ______________________________________
5. Sea water absorbs large amounts of the ________________ and _______________ wavelengths.
6. Various groups of algae have evolved different forms of chlorophyll. Name the three chlorophyll forms. ________________________________________________________
7. Compounds called ____________ ____________ absorb light at different wavelengths than chlorophyll.
8. Accessory pigments give algae a wide range of ___________________.
9. ____________________ are plantlike protists that have ______ flagella but no cell _________________.
10. Euglenas are found where? _____________________________________________
11. The _______________________ helps the Euglena find sunlight.
12. Euglenas have an intricate cell membrane called a ______________________________.
13. How do euglenophytes reproduce? _______________________________________
14. Chrysophytes means ________________ ________________________.
15. How do chrysophytes store their food? ____________________________________
16. What do diatoms produce their thin, delicate cell walls from? _________________________
17. About __________ of the dinoflagellates are photosynthetic; the other __________ live as ____________________.
18. When agitated by sudden movement, some dinoflagellates give off ___________________.
19. Plantlike protists plays a major _____________________________ role on Earth.
20. They (protists) are at the base of the _______________ _____________________.
21. ________________________ constitutes the population of small, _________________________ organisms found near the surface of the ocean.
22. Many protists grow rapidly where ________________________ is discharged.
23. Enormous masses of algae are known as _____________________________.
24. What is "red tide"? ____________________________________________________
25. Eating shellfish from water infected with _____________ tide can cause serious illness and even _______________ in humans and fish.

20-4 Plantlike Protists: Red, Brown, and Green Algae

26. Name the accessory pigment of red algae. _______________________________
27. What color light does it absorb? _______________________________________
28. Where can red algae be found? ________________________________________
29. Red algae plays an important role in the formation of the_________________ ___________________.
30. Phylum Pheaophyta means __________________ _______________________.
31. Where do you find brown algae? _________________________________________
32. What is the function of brown algae's bladder? _____________________________
33. Green algae stores food in the form of _________________________.
34. Where do you find green algae? _________________________________________
35. What is the name of the algae that form long threadlike colonies? ___________________________
What is the name of the algae that is arranged as a hollow sphere? _____________________________
36. Algae produce much of Earth's oxygen through _____________________________
37. What is nori and how is it used? _________________________________________
38. Chemical from algae are used to make _______________________________________________________________________________________________________________________________________________

20-5 Funguslike Protists

39. Like fungi, funguslike protists are ______________________ that absorb nutrients from dead or decaying ____________________ ______________________.
40. Unlike most true fungi, funguslike protists have _____________________ and lack _________
__________________.
41. Where are slime molds found? __________________________________________________
42. The individual cells of _________________ ____________ _________________ remain distinct while those whose cells fuse to form large cells with many nuclei are called ______________________ ____________________ _________________________,
43. Cellular slime molds are a. free living
b. parasites

44. Acellular slime molds belong to phylum _____________________________.
45. Water molds are also know as _____________________________.
46. Water molds produce thin filaments known as __________________.
47. What is the scientific name of the protist that caused the Irish potato blight of 1845?
______________________ _______________________