If a piece of land which had a plant community becomes barren due to some external thrust, the succession taking place here is called:

Question

Accepted Answer

Retrogessive. The question describes a reversal of succession due to external disturbance, which is retrogressive succession. Secondary succession occurs after a disturbance where soil remains, but the key term for 'barren' and 'reversal' in this context often points to retrogression in ecological quizzes.