Comment on the lifecycle and nature of a fern prothallus.
Fern, which is a type of pteridophyte; reveals a haplo-diplontic state. In this situation, both the stages of gametophytic and sporophytic are multicellular. The diploid sporophyte is represented by a prepotent and independent, photosynthetic, vascular plant body. The haploid gametophyte is also independent, but the duration of its life is shorter than that of the sporophytes.