Chapter 20 – Protists Use your book to answer the key concepts for each section of Chapter 20. Each must be answered in a complete sentence. Notice the amount of space that is left for the question. I am looking for more than one sentence answers. 20-1 1. What are protists? 20-2 1. What are the distinguishing features of the major phyla of animal-like protists? 2. How do animal-like protists harm other living things? 20-3 1. What is the function of chlorophyll and accessory pigments in algae? 2. What are the distinguishing features of the major phyla of unicellular algae? 3. Summarize the ecological roles of unicellular algae. 20-4 1. What are the distinguishing features of the major phyla of multicellular algae? 2. How do multicellular algae reproduce? 3. Identify and explain some human uses of algae? 20-5 1. What are the similarities and differences between funguslike protists and fungi? 2. What are the defining characteristics of the slime molds and water molds? 3. Summarize the ecological roles of funguslike protists. Use this space to draw and label all parts of Figures 20-5 (p. 501) and 20-10 (p. 507).