Chapter 21 Resource: Ecology

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Name Date ClassChapter Test (continued)Directions: Match each description in the first column with the item in the second column by writing the correctletter in the space provided.Assessment11. a group of the same type of organisms living inthe same place at the same time12. all of the populations that live in an area13. includes soil, temperature, and water14. the organisms in an ecosystem15. something that limits the size of a populationDirections: For each question, write the letter of the best choice in the space provided.II.16. The role of an organism in its ecosystem is called the organism’s _____.a. niche b. limiting factor c. habitat d. community17. In an ecosystem, decomposers get their food by _____.a. making it themselves c. consuming themselvesb. eating live organisms d. using dead organisms18. In an ecosystem, producers and consumers are both _____.a. biotic factors b. decomposers c. niches d. predators19. A squirrel in a forest is a member of _____.a. an ecosystem b. a population c. a community d. all of these20. Which of the following is a biotic factor?a. soil b. temperature c. vegetation d. sunlightApplying ConceptsDirections: Answer each question in the space following it.1. Explain how the biosphere is both an ecosystem itself and a collection of ecosystems.2. List four examples of ecosystems.________________________________________________________________________a. limiting factorb. populationc. biotic factorsd. abiotic factorse. community________________________________________________________________________Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.36 Ecology
Name Date ClassChapter Test (continued)3. Identify two examples of abiotic factors in a stream ecosystem.4. Explain how an organism’s niche is related to its habitat.5. Explain the difference between a food chain and a food web.6. Explain why the following statement is true: “All decomposers are consumers, but not all consumersare decomposers.”7. Describe the difference between a balanced ecosystem and an unbalanced ecosystem.Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.III.Applying SkillsSkill: Classifying Read each statement. If it is a fact, write an F in the space provided. If it is an opinion, writean O in the space provided.8. The biotic factors of an ecosystem are more interesting than the abiotic factors of anecosystem9. Ecology is the study of the interactions that take place among the living organismsand nonliving parts of an ecosystem.10. The largest ecosystem on Earth is the biosphere.11. The terms “predator” and “consumer” are confusing.12. It’s easy to understand any ecosystem if you first identify its different parts.AssessmentEcology 37
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Chapter 21 Resource: Ecology

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