Multiple Choice
What is the total number of organisms in an ecosystem called?
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48. Ecology
Introduction to Ecology
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What is one way secondary succession differs from primary succession?
A
Primary succession involves the regrowth of a previously existing community.
B
Secondary succession occurs in areas where soil is already present.
C
Secondary succession begins on bare rock surfaces.
D
Primary succession occurs after a forest fire.
Verified step by step guidance1
Understand the definitions: Primary succession occurs in lifeless areas where there is no soil, such as after a lava flow or on a new sand dune. Secondary succession occurs in areas where a community has previously existed and soil is already present, such as after a forest fire or flood.
Identify the key difference: The main difference between primary and secondary succession is the presence of soil. In primary succession, soil needs to be formed, while in secondary succession, soil is already present.
Analyze the given options: Evaluate each statement to determine if it correctly describes primary or secondary succession.
Option analysis: 'Primary succession involves the regrowth of a previously existing community' is incorrect because primary succession starts in a lifeless area. 'Secondary succession occurs in areas where soil is already present' is correct as it matches the definition of secondary succession.
Conclude with the correct distinction: Secondary succession differs from primary succession in that it occurs in areas where soil is already present, allowing for faster regrowth of the community.
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