NEET BIOLOGY

Detailed explanation-1: -Which of the following best describes when secondary succession occurs? Explanation: Secondary succession can be described as the colonization of a habitat that once supported plant and animal life but was abandoned due to ecological disturbance.

Detailed explanation-2: -Old-field succession is an example of secondary succession. It occurs when farmland is abandoned. When a farmer stops cultivating a field, grasses and weeds quickly grow and cover the abandoned land. The pioneer grasses and weeds grow rapidly and produce many sees to cover large areas.

Detailed explanation-3: -Secondary succession is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat.

Detailed explanation-4: -Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed.