Alternation of generationsis a term that is referred to the life cycle of a plant as it interchanges between a sexual phase, or generation, and an asexual phase.
The majority of fungi are decomposers that obtain nutrients from dead or decomposing organic materials (usually plants).
Some vascular plants, fungi, and protists have a reproductive cycle called alternation of generations.
Fungi show alternation of generations, the haploid phase is the dominant phase.