Name Class Section 20-1 The Kingdom Protista Date (pages 497-498) Key Concept • What are protists? What Is a Protist? (page 497) 1. What is a protist? 2. Circle the letter of each sentence that is true about protists. a. All are unicellular. b. All cells have a nucleus. c. All cells have membrane-bound organelles. d. All are multicellular. 3. Why are some organisms that consist of thousands of cells considered to be protists? Evolution of Protists (page 498) 4. The first eukaryotic organisms on Earth were 5. What is biologist Lynn Margulis’s hypothesis about where the first protists came from? Classification of Protists (page 498) 6. Complete the table about protist classification. GROUPS OF PROTISTS Group Method of Obtaining Food Consume other organisms Plantlike protists Funguslike protists Name Class Date 7. What don’t categories of protists based on the way they obtain food reflect about these organisms? Reading Skill Practice By looking at illustrations in textbooks, you can help yourself remember better what you have read. Look carefully at Figure 20-1 on page 497. What important idea do these photographs communicate? Do your work on a separate sheet of paper.