Which scenario best illustrates secondary succession?

• A. Occurs after disturbances in previously inhabited areas
• B. Occurs in areas that had prior life and were disturbed
• C. Occurs without soil formation
• D. Occurs in aquatic environments

Answer: (A)

Secondary succession is the regrowth of a community after a disturbance that leaves the soil and some organisms intact. The best scenario is disturbance in an area that previously supported life, because the soil, seeds, and microbes that survive provide the foundation for rapid recolonization, guiding a progression from grasses to shrubs to trees. This contrasts with primary succession, which starts on bare rock with no soil, and with scenarios focused on aquatic environments, which don’t capture the typical terrestrial pattern of secondary succession.