Skills Worksheet Directed Reading A Section: Kinds of Protists 1. What three groups can scientists use to organize protists based on shared traits? PROTIST PRODUCERS 2. What is the name for protists that convert the sun s energy into food? a. slime molds b. algae c. amoebas d. parasites 3. All types of algae have what color pigment? a. red b. blue c. brown d. green 4. Where do most types of algae live? a. in dirt b. in water c. in sand d. in plants 5. Which of the following is an alga that lives in shallow water along the shore? a. phytoplankton b. seaweed c. water mold d. radiolarian 6. Which of the following provides most of the world s oxygen? a. phytoplankton b. seaweed c. amoebas d. flagellates Holt Science and Technology 4 Protists and Fungi
Match the correct description with the correct term. Write the letter in the space provided. 7. the algae group most of the world s seaweeds belong to 8. the protist producers that use photosynthesis to make food 9. the main pigment in these algae cells is chlorophyll 10. the cell of this organism contains a glasslike substance called silica 11. many individual protists living together as a group a. brown algae b. algae c. green algae d. phytoplankton e. colony f. red algae g. diatoms 12. free-floating single-celled algae 13. seaweeds that live in cool climates 14. Name four places where green algae live. 15. Individual cells of some green algae live in groups called 16. Name three facts about brown algae. 17. Where are diatoms found? 18. The cell walls of diatoms contain Holt Science and Technology 5 Protists and Fungi
19. The whip-like strands on a dinoflagellate that cause the cells to spin through water are called 20. Most dinoflagellates get their energy from, but a few are,, or 21. Why don t euglenoids fit easily into one protist group? HETEROTROPHS THAT CAN MOVE 22. What are mobile protists sometimes called? a. protozoans b. radiolarians c. foraminiferans d. paramecium 23. Where can amoebas be found? 24. What two things does an amoeba use pseudopodia for? 25. How is a food vacuole formed? 26. What is the purpose of a food vacuole? Holt Science and Technology 6 Protists and Fungi
Match the correct description with the correct term. Write the letter in the space provided. 27. These are tiny, hairlike structures. 28. These have shells that look like glass ornaments. 29. This protist can live in the digestive tract of vertebrates. 30. This controls the functions of a ciliate s cell. a. cilia b. radiolarians c. Giardia lamblia d. foraminiferans e. macronucleus 31. These have snail-like shells. 32. What does the term mutualism mean? 33. What are the two uses for cilia? 34. In a ciliate, the passes genes to another paramecium during sexual reproduction. HETEROTROPHS THAT CAN T MOVE 35. Name two characteristics of spore-forming protists. 36. Besides water, where do water molds live? 37. What are the two ways water molds get their food? Holt Science and Technology 7 Protists and Fungi
38. Describe the appearance of a slime mold. 39. Slime molds use pseudopodia to eat bacteria and 40. Small reproductive cells that are covered by a thick cell wall are called 41. When do spores develop into new slime molds? Holt Science and Technology 8 Protists and Fungi