1. End Show Slide 1 of 13 Copyright Pearson Prentice Hall Biology

2. End Show Slide 2 of 13 Copyright Pearson Prentice Hall 20-1 The Kingdom Protista

3. End Show 20-1 The Kingdom Protista Slide 3 of 13 Copyright Pearson Prentice Hall What Is a Protist? What are protists?

4. End Show Slide 4 of 13 20-1 The Kingdom Protista Copyright Pearson Prentice Hall Protists are eukaryotes that are not members of the Plant, Animal, or Fungi kingdoms. What Is a Protist?

5. End Show Slide 5 of 13 20-1 The Kingdom Protista Copyright Pearson Prentice Hall The kingdom Protista may include more than 200,000 species. Most, but not all, protists are unicellular. What Is a Protist?

6. End Show Slide 6 of 13 20-1 The Kingdom Protista Copyright Pearson Prentice Hall Evolution of Protists The first eukaryotic organisms on Earth were protists. Mitochondria and chloroplasts in eukaryotic cells may have descended from prokaryotes that lived inside larger cells. Evolution of Protists

7. End Show Slide 7 of 13 20-1 The Kingdom Protista Copyright Pearson Prentice Hall Classification of Protists One way protists can be classified is by how they obtain nutrition: Heterotrophs are called animal-like protists. Photosynthesizers are called plantlike protists. Decomposers and parasites are called funguslike protists. Classification of Protists

8. End Show - or - Continue to: Click to Launch: Slide 8 of 13 Copyright Pearson Prentice Hall 20-1

9. End Show Slide 9 of 13 Copyright Pearson Prentice Hall 20-1 A protist is any organism that is not a plant, an animal, a fungus, or a prokaryote. a.True b.False

10. End Show Slide 10 of 13 Copyright Pearson Prentice Hall 20-1 Funguslike protists are a.autotrophic. b.photosynthetic. c.parasitic. d.chemosynthetic.

11. End Show Slide 11 of 13 Copyright Pearson Prentice Hall 20-1 Animal-like protists are a.autotrophs. b.heterotrophs. c.decomposers. d.producers.

12. End Show Slide 12 of 13 Copyright Pearson Prentice Hall 20-1 Biologists have difficulties classifying protists because a.their DNA cannot be examined. b.evidence suggests that they evolved from so many different groups. c.structural similarities used for classification are difficult to detect. d.their ancestors may have evolved through symbiosis.

13. End Show Slide 13 of 13 Copyright Pearson Prentice Hall 20-1 An organism is classified as a protist if it a.resembles any other member of the Eukarya domain. b.shares DNA sequences that are found only in other protists. c.has a cell wall made of cellulose. d.does not belong in any other kingdom of the Eukarya.

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