Alternation of generation: When the repeatation of haploid (n) generation or gametophytic generation or sexual generation and diploid (2n) generation or sporophytic generation or asexual generation occurs alternately in the life cycle of a plant, it is called alternation of generation.
Alternation of generation is clearly found in the life cycle of Semibarbula, both haploid (n) generation or gametophytic generation and diploid (2n) generation or sporophytic generation repeatedly came one after another in the life cycle.
