NEET BIOLOGY

Detailed explanation-1: -Secondary succession occurs in formerly inhabited areas that were disturbed. The disturbance could be fire, flood, or human activities such as farming. This type of succession is rapid because the soil is already in place.

Detailed explanation-2: -Secondary succession starts when a disturbance (such as wind storms, insect outbreaks, logging, avalanches, bulldozers, or fire) leaves the soil intact. Seeds, spores, and roots usually remain as well. Sites that begin with secondary succession reach the next stage more quickly than during primary succession.

Detailed explanation-3: -Secondary succession occurs when the primary ecosystem gets destroyed. For eg., a climax community gets destroyed by fire. It gets recolonized after the destruction. This is known as secondary ecological succession.

Detailed explanation-4: -In secondary succession, a previously occupied area is re-colonized following a disturbance that kills much or all of its community. A classic example of secondary succession occurs in oak and hickory forests cleared by wildfire. Wildfires will burn most vegetation and kill animals unable to flee the area.

Detailed explanation-5: -If an ecosystem begins on previously unvegetated terrain and nothing happens that would trigger secondary succession, then the ecosystem will reach a climax with primary succession. Some examples of secondary succession could be a wildfire or logging deforestation.