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12.Ecosystem
normal
Which one of the following statements is incorrect for secondary succession?
A
It occurs on a deforested site
B
It follows primary succession
C
It is similar to primary succession except that it has a relatively fast pace
D
It begins on a bare rock
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 previous 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 $200\; years$.
Standard 12
Biology
