Which one of the following statements is correct for secondary succession?

6 2011 AIPMT-PRE EcosystemEcological succession Medium
Which one of the following statements is correct for secondary succession?
A It is similar to primary succession except that it has a relatively fast pace
B It begins on a bare rock
C It occurs on a deforested site
D It follows primary succession

Detailed Solution

Secondary succession begins in areas where the natural biotic communities have been destroyed, such as abandoned farm lands, burned or cut (deforested) forests and lands that have been flooded.
Because some soil or sediment is already present, it is faster than primary succession.
Succession that begins on a bare rock, where no living organisms ever existed, is primary succession.
It is not simply the same as primary succession at a faster pace: the starting conditions and the pioneer species are different, and it does not have to follow a primary succession.
Hence the correct statement is that it occurs on a deforested site.

Ecological succession in past papers

6 questions from this chapter have appeared across 4 exam years.

Keep going

Practise Ecological succession All 6 questions This chapter in 2011 AIPMT-PRE