Secondary succession is best described as?

• A. Series of community changes which take place on a previously colonized, but disturbed or damaged habitat
• B. Stability of a mature forest after a disturbance
• C. Immediate regrowth of mature trees after logging
• D. Introduction of an invasive species into a forest

Answer: (A)

Secondary succession is the series of changes that happens in a habitat after a disturbance, when the soil remains and life can recover. Because the soil and some seeds or organisms survive, recolonization occurs more quickly than in primary succession, and you see a predictable sequence: grasses and herbaceous plants first, then shrubs, then young trees, gradually rebuilding the ecosystem toward its mature state. This fits a scenario where a previously inhabited area is disturbed or damaged but not stripped down to bare ground.

It isn’t about a mature forest staying stable after disturbance, nor about the immediate, rapid regrowth of mature trees after logging, which would skip the typical orderly replacement by earlier successional species. It also isn’t about introducing a new species; that describes invasion, not the process of ecosystem recovery following disturbance.