One of those phases can contain archegonia or antheridia, and, overall, it requires both the processes of syngamy and meiosis in ferns and liverworts.
A more general version occurs in some cnidarians, parasitic flatworms, and the malaria parasite Plasmodium. Also known as metagenesis or heterogenesis, it can result in heteromorphic or isomorphic phases, as is the case with red algae. One of those phases can contain archegonia or antheridia, and, overall, it requires both the processes of syngamy and meiosis in ferns and liverworts. For 10 points, name the mechanism by which plants switch between the gametophyte and sporophyte forms, thus producing a haploid-diploid life cycle.
A more general version occurs in some cnidarians, parasitic flatworms, and the malaria parasite Plasmodium.
{alternation of generations} [accept “{metagenesis”} or “{heterogenesis}” before it is read]