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Honors Biology Ecology Unit Test Study Guide -Identify parts of a food web (consumers and which level, decomposers, &producers) -Identify and explain conversion of different organic and inorganic chemicals in three chemical cycles (Carbon/oxygen, nitrogen, and water) -Explain the relationships between marine aquatic zones and living organism found in each -Interpret population growth graphs in relation to change in population rates (births and deaths) -Identify each biome by unique and distinguishing features - Essay: Calculate and contrast the amount of energy found in two food chains. Review Questions 1. How is an ecosystem organized, from least to most comprehensive? (A) Individual, community, population, biome, ecosystem (B) Individual, population, community, ecosystem, biome (C) Individual, population, ecosystem, niche, community, (D) Individual, ecosystem, niche, community, population (E) Individual, population, biome, ecosystem, niche 2. Why is energy lost as it moves from producers to primary consumers? (A) Decomposer activity (B) Biomass decreases (C) Secondary consumers eat primary consumers (D) Thermal energy and metabolic activity (E) None of the above 3. Which of the following organisms participate in the nitrogen cycle? (A) Denitrifying bacteria (B) Nitrifying bacteria (C) Fixating bacteria (D) All of the above (E) None of the above 4. Why might growth slow from an exponential rate in a population of sheep? (A) Disease (B) Lack of space (C) Wolves (D) All of the above (E) None of the above 5. What is a relationship in which two organisms both benefit from their association? (A) Symbiosis (B) Mutualism (C) Commensalism (D) Parasitism (E) Competition 6. Which is true of ecological succession? (A) Lichens & mosses move into new communities first. (B) Climax communities have lower total biomass than preceding communities. (C) Species diversity is greatest in the early stages of succession. (D) Climax communities shift constantly. (E) All of the above 7. Which of the following releases large amounts of oxygen into the atmosphere? (A) Animal consumption of producers (B) Photosynthesis (C) Chemosynthesis (D) Bacterial decay (E) None of the above Practice Question Answers: 1. B 2. D 3. D 4.D 5. B 6. A 7.B