Articles > Quizzes & Surveys > Freshwater Communities & Plankton – Quiz Freshwater Communities & Plankton – Quiz Quiz Choose the best answer. 1. Microscopic photosynthetic organismsPhytoplanktonZooplankton 2. Photosynthetic bacteria in freshwaterPhytoplanktonZooplankton 3. Microscopic heterotrophsPhytoplanktonZooplankton 4. Examples are rotifers and crustaceansPhytoplanktonZooplankton 5. Consumed by herbivoresPhytoplanktonZooplankton Send Your Results (Optional) Your Name To Email Time is Up!