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1 Name Date Class Study Guide CHAPTER 19 Section 1: Introduction to Protists In your textbook, read about protists. Match the definition in Column A with the term in Column B. Column A Column B 1. protist that makes its own food through photosynthesis A. eukaryotic 2. protist that eats other unicellular organisms B. microsporidium 3. protist that absorbs its nutrients from dead organisms C. water mold 4. type of cell that all protists have D. protozoan 5. causes disease in insects E. alga In your textbook, read about classifying protists and the origin of protists. Use each of the terms below only once to complete the passage. amoeba autotroph endosymbiosis evolutionary history food food source heterotroph kelp The classification of protists into three groups is based on their (6). For example, the diagram above shows a(n) (7). It is shown eating (8), which makes it a(n) (9). The giant (10), which is a(n) (11), is an example of a plantlike protist. The (12) of protists is not well known. However, (13) is thought to have been part of this process. Unit 5 CHAPTER 19 Protists 49

2 Name Date Section 1 Introduction to Protists (continued) Main Idea Protists Details Organize information about how protists are classified. All protists are Protists can be classified as: Analyze the characteristics that are used to classify protists. Type of Protist Characteristic Example Animal-like Plantlike Funguslike List two characteristics that distinguish funguslike protists from fungi. distinguishing characteristics of funguslike protists Protists 189

3 Name Date Class Study Guide CHAPTER 19 Section 2: Protozoans Animal-like Protists In your textbook, read about paramecia. Label the diagram of the paramecium. Use these choices: cilia contractile vacuole macronucleus micronucleus oral groove In your textbook, read about Ciliophora, Sarcodina, Apicomplexa, and Zoomastigina. Complete the table by checking the correct column(s) for each description. Description Ciliophora Sarcodina Apicomplexa Zoomastigina 6. Reproduce through spores 7. Use flagella for movement 8. Have numerous short, hairlike projections 9. Use pseudopods for feeding and locomotion Respond to each statement. 10. Name two phyla of protists that have members that cause diseases in humans. 11. Describe what Chagas disease is and what causes it. 12. Explain how African sleeping sickness is transmitted to humans. 50 Protists CHAPTER 19 Unit 5

4 Name Date Section 2 Protozoans Animal-like Protists (continued) Main Idea Ciliophora Details Model and label a paramecium and its parts in the space below. Label the following parts with a brief description of each part. anal pore cilia contractile vacuole ectoplasm gullet micronucleus macronucleus oral groove Sarcodina Organize facts about amoebas in the table below. Phylum: Excretion method: Habitats: Feeding method: Body structures: Reproduction method: 192 Protists

5 Name Date Class Study Guide CHAPTER 19 Section 3: Algae Plantlike Protists In your textbook, read about the characteristics, diversity, and life cycle of algae. If the statement is true, write true. If the statement is false, replace the italicized term or phrase to make it true. 1. The three criteria used to classify algae are the types of chlorophyll and secondary pigments, the method of chlorophyll storage, and the composition of the cell wall. 2. All algae are considered plantlike because they contain photosynthetic pigments. 3. Algal blooms occur when euglenoids reproduce in great numbers due to plentiful food and favorable environmental conditions. 4. Bioluminescent dinoflagellates emit light and are usually found in salt water. 5. Algae that have characteristics of both plants and animals are chrysophytes. 6. The secondary pigment fucoxanthin accounts for the color of red algae. 7. Algae are high in protein and contain minerals, trace elements, and vitamins. 8. Many algae have a life cycle called alternation of generations. In your textbook, read about the life cycle of algae. Label the diagram. Use these choices: gametes gametophytes spores sporophyte Unit 5 CHAPTER 19 Protists 51

6 Name Date Section 3 Algae Plantlike Protists (continued) Main Idea Characteristics of Algae Details Organize information about algae by completing the chart. Algae Like plants: Unlike plants: Function of secondary pigments: Found in many colors because: Diversity of Algae Sequence the asexual and sexual reproductive cycles of diatoms by writing the letter for each step in the correct box. a. fusion of gametes d. gametes released b. meiosis e. wall formation around cell c. mitosis f. zygote Compare the ways that euglenoids are like plants and like animals. 1. Like plants Euglenoids 1. Like animals Protists 195

7 Name Date Class Study Guide CHAPTER 19 Section 4: Funguslike Protists In your textbook, read about funguslike protists. Write the term or phrase that best completes each statement. Use these choices: acrasin chitin Myxomycota Oomycota Phytophthora infestans plasmodium 1. The cell walls of funguslike protists do not contain like the cell walls of true fungi. 2. Some slime molds form a(n), which is a moving mass of cytoplasm. 3. A chemical called signals slime mold amoeboid cells to congregate and form a single sluglike colony. 4. Acellular slime molds belong to the phylum. 5. Water molds and downy mildew in the phylum are often found in water or damp places. 6. The downy mildew devastated the potato crop in Ireland in the nineteenth century, causing many people to starve. In your textbook, read about slime molds. Identify the following life cycles as cycles for acellular slime molds or cellular slime molds. Haploid amoeba-like cells sexual reproduction diploid zygote giant cell meiosis, then multiple mitosis cell rupture haploid amoeba-like cells 7. Spores haploid flagellated and amoeba-like cells fertilization diploid plasmodium meiosis spores 8. The diagram shows a multicellular amoeba-like mass. For each statement below, write true or false. 9. The diagram shows a plasmodium. 10. The diagram shows a cellular slime mold. 52 Protists CHAPTER 19 Unit 5

8 Name Date Section 4 Funguslike Protists (continued) Main Idea Slime Molds Details Compare slime molds to fungi by completing the table below. Similarities in Slime Molds and Fungi Reproduce using: Feed on: Absorb nutrients through: Contrast slime molds and fungi by completing the following sentence. The cell walls of fungi are composed of, and cell walls in slime molds contain. Compare and contrast acellular and cellular slime molds by using the following phrases to complete the Venn diagram. move and surround food like amoebas flagellated during part of life cycle most of life cycle spent as single, amoeba-like cells Acellular Slime Molds form colonies when food is scarce mobile mass of cytoplasm with no separate cells make spores to reproduce Both Cellular Slime Molds 198 Protists

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