Botanists call the prothallium the gametophyte, the plant entire body bearing sexual intercourse organs. The common fern plant may be the sporophyte. To summarize: ferns produce spores; spores create prothallia; within the prothallia grow eggs and sperm; sperm fertilize eggs; fertilized eggs develop into massive fern plants. The 1st concept https://waylonqzhou.salesmanwiki.com/9801131/about_ballon_arch