Chapter 25 Outline

Kingdom Protoctista

The evolution of the eukaryotic cell, the classification, structure, and importance of algae and protozoa, and a comparison of slime molds and water molds are topics covered in this chapter.

Chapter Outline

In this chapter outline, the learning objectives and the selected key terms are given for each major head in the chapter.

How the Eukaryotic Cell Evolved (p. 412)

1. Tell how the eukaryotic cell may have arisen, including the nucleus, the

mitochondria, and the chloroplasts.

2. Give data to substantiate the endosymbiotic hypothesis.

Selected Key Terms: kingdom Protoctista, protoctist

Algae Are Plantlike (p. 413)

3. List and give the phylum name for the different types of algae. Note why algae

are not classified as plants.

4. Tell how the green algae are grouped, and give an example of each type.

Contrast the manner in which these organisms reproduce.

5. Describe several forms of brown algae. Note what characteristics they share

with diatoms, where they live, and how they are economically important.

6. Describe the structure and discuss the importance of diatoms and dinoflagellates.

7. Describe the characteristics of euglenoids, and tell how they typify the problem

of classifying protoctists.

8. Describe the characteristics of red algae. Note where they live, and discuss their

economic importance.

algae, plankton, phytoplankton, colony, green algae, spore, isogamy, oogamy,

filament, conjugation, brown algae, seaweed, golden brown algae, diatom,

dinoflagellate, euglenoid, red algae

Protozoa Are Animal-like (p. 420)

9. List and give the phylum name for the different types of protozoa, and tell why

they are not considered animals.

10. Compare and contrast the characteristics of amoeboids and ciliates; discuss their

diversity.

11. Describe illnesses caused by zooflagellates and sporozoa, and describe the life

cycle of Plasmodium vivax, a cause of malaria.

protozoa, zooplankton, amoeboid, pseudopod, phagocytize, ciliate, zooflagellate,

trypanosome, sporozoa

Slime Molds and Water Molds Are Funguslike (p. 425)

12. Compare and contrast plasmodial slime molds and cellular slime molds. Explain

how slime molds differ from fungi.

13. Describe the characteristics of water molds. Explain how water molds differ

from fungi.

saprotroph, slime mold, sporangium, water mold

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