Multiple Choice
In an ecological food chain, what role does a secondary consumer typically play?
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48. Ecology
Introduction to Ecology
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Which scenario is most likely to result in secondary succession?
A
A new volcanic island forms.
B
A forest regrows after a wildfire.
C
A glacier retreats, exposing bare rock.
D
A sand dune forms along a coastline.
Verified step by step guidance1
Understand the concept of secondary succession: Secondary succession occurs in areas where a disturbance has destroyed an existing community but left the soil intact. This is different from primary succession, which starts on bare rock or newly formed land where no soil exists.
Identify the key characteristics of secondary succession: It typically follows events like wildfires, hurricanes, or human activities that clear an area but do not remove the soil.
Analyze the given scenarios: Consider which scenarios involve the presence of soil and previously existing life forms that could regrow.
Evaluate the scenario of a forest regrowing after a wildfire: In this case, the soil remains after the fire, allowing plants and other organisms to recolonize the area, which is characteristic of secondary succession.
Compare with other scenarios: A new volcanic island, a retreating glacier, and a forming sand dune all involve starting from bare rock or sand without existing soil, which are more indicative of primary succession.
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