Chapter 21 Resource: Ecology

Name Date ClassChapterTestEcologyI. Testing ConceptsDirections: Match each description in the first column with the item in the second column by writing the correctletter in the space provided.1. the part of Earth where organisms can livea. biotic factorsCopyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.2. a system made up of organisms interacting with one anotherand with the nonliving parts of the system3. organisms that make up the living part of an ecosystem4. nonliving things found in an ecosystem5. the study of the interactions in an ecosystemDirections: For each question, write the letter of the best choice in the space provided.6. Which of the following is a biotic factor in an ecosystem?a. soilb. bacteriac. waterd. sunlight7. Deserts, mountains, and rivers are all examples of _____.a. biospheresb. nichesc. the greenhouse effectd. volcanic eruptions8. Ecosystems are _____.a. always balancedb. never balancedc. always changingd. never changing9. Which statement is correct?a. A population is the same thing as a community.b. A population is a group of communities.c. A community is a group of populations.d. A community is a part of a population.10. Grass seedlings compete for _____.a. sunlightb. waterc. living spaced. All of the aboveb. ecosystemc. ecologyd. abiotic factorse. biosphereAssessmentEcology 35