NEET BIOLOGY

Detailed explanation-1: -Secondary succession occurs in an area that is previously colonized but disturbed or damaged habitat. For example, after falling a tree in the woods, land clearance, or a fire. Succession will not move further than the climax community. This is the final stage of succession.

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: -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.