Bryophytes are simple, small amphibious, i.e., they require both water and land plants which do not have vascular tissue system (Atrachaeta). The haploid gametophyte is the dominant stage in the life cycle of bryophytes. The main plant body may be thalloid, e.g., Rsccia, Marchantia or it may be differentiated into rhizoids, stem like structure and leaf structure.