Multiple Choice
What would happen in an ecosystem if decomposers were absent?
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52. Ecosystems
Introduction to Ecosystems
Multiple Choice
Which of the following descriptions about the organization of an ecosystem is correct?
A
A biome is defined as a single species interacting with its environment.
B
A population consists of multiple species living in the same area.
C
An ecosystem includes both the living organisms and the nonliving components of a particular area.
D
A community includes only the abiotic factors in an environment.
Verified step by step guidance1
Step 1: Begin by understanding the hierarchical organization of biological systems, which includes individual organisms, populations, communities, ecosystems, and biomes.
Step 2: Define each term clearly: A population consists of individuals of the same species living in a specific area. A community includes all the living organisms (multiple species) in a particular area. An ecosystem encompasses both living organisms (biotic factors) and nonliving components (abiotic factors) such as water, soil, and air. A biome is a larger-scale classification that includes multiple ecosystems with similar climate and dominant vegetation.
Step 3: Analyze the descriptions provided in the problem. For example, the statement 'A biome is defined as a single species interacting with its environment' is incorrect because a biome includes multiple ecosystems, not a single species. Similarly, 'A population consists of multiple species living in the same area' is incorrect because a population refers to individuals of the same species.
Step 4: Evaluate the correct statement: 'An ecosystem includes both the living organisms and the nonliving components of a particular area.' This aligns with the definition of an ecosystem, which integrates biotic and abiotic factors.
Step 5: Conclude by noting that the statement 'A community includes only the abiotic factors in an environment' is incorrect because a community refers to the biotic factors (living organisms) in an area, not the abiotic factors.
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