According to the textbook, the main plant body of the bryophyte is the haploid gametophyte, which is the dominant, independent, and photosynthetic phase. The sporophyte is not free-living but is attached to the photosynthetic gametophyte and derives nourishment from it [Sources 44, 45, 49]. Furthermore, bryophytes lack true roots; they are attached to the substratum by rhizoids .