Articles > Ecosystem – Quiz Ecosystem – Quiz Quiz Choose the best answer. 1. What is ecosystem? A system consisting of biotic components that function together as a unit A system consisting of abiotic components that function together as a unit A system consisting of biotic and abiotic components that function together as a unit 2. Which of the following is NOT a biotic component of an ecosystem? Eukaryote Prokaryote Atmosphere 3. Which of these is not a consumer? Photoautotroph Herbivore Omnivore 4. Aquatic ecosystem characterized by the presence of high salt content Lotic Lentic Marine 5. The ecological process in which fungi break down organic matter Photosynthesis Fermentation Decomposition Send Your Results (Optional) Your Name To Email Time is Up!