NEET 2011
- Exam
- NEET
- Year
- 2011
- Subject
- Botany
- Chapter
- Ecosystem
NEET 2011 · Botany · Ecosystem
Which one of the following statements is correct for secondary...
Which one of the following statements is correct for secondary succession?
Options
- AIt occurs on a deforested site
- BIt follows primary succession
- CIt is similar to primary succession except that it has a relatively fast pace
- DIt begins on a bare rock
Correct answer
A. It occurs on a deforested site
Step-by-step solution
Secondary succession or subsere is ecological succession that takes place in a recently denuded area which still contains a lot of organic debris, remains and propagules of previously living organisms. It is more common and caused by baring of an area due to forest fires, deforestation, excessive overgrazing, landslides, earthquakes, repeated floods, etc. Only 50 to 100 years are required for establishment of a grassland over a recently denuded area. Formation of forest requires 100 to 200 years.