WebMar 5, 2024 · Nonvascular plants include mosses, liverworts, and hornworts. They are the only plants with a life cycle in which the gametophyte generation is dominant. Figure below shows the life cycle of moss. The familiar, green, photosynthetic moss plants are gametophytes. The sporophytegeneration is very small and dependent on the … WebMay 17, 2024 · Bryophytes are unique among plants in that the dominant, conspicuous generation is the haploid gametophyte. In all other plants, the dominant stage is the diploid sporophyte. Most reproduction of bryophytes is asexual, occurring by fragmentation of body parts, and by the production of specialized vegetative units called gemmae .
Plant Life Cycles and Alternation of Generations
WebMar 31, 2024 · The bryophytes show an alternation of generations between the independent gametophyte generation, which produces the sex organs and sperm and eggs, and the dependent sporophyte generation, which … WebBryophytes. Bryophytes are the group of seedles plants that are the closest-extant relative of early terrestrial plants. The first bryophytes (liverworts) probably appeared in the Ordovician period, about 450 million years ago. However, because they lack of lignin and other resistant structures, bryophyte fossil formation is improbable and the ... top crypto trading firms
Evolution of Seed Plants Biology for Majors II - Lumen Learning
WebApr 29, 2011 · Another important characteristic of bryophytes is the alteration of generation. Their dominant generation is the haploid gametophytic generation. Hence, their sporophytic generation is less … Webalternation of generations, also called metagenesis or heterogenesis, in biology, the alternation of a sexual phase and an asexual phase in the life cycle of an organism. The … WebJul 7, 2024 · In bryophytes (mosses and liverworts), the dominant generation is haploid, so that the gametophyte comprises what we think of as the main plant. The opposite is … top crypto trackers