when the gametophyte is not formed by spores but by any other part of sporophyte, it is known as

1. multispory
2. polyspory
3. apospory
4. aplospory

Apospory is The development of a gametophyte directly from a sporophyte without the occurrence of meiosis or spore formation and apogamy is
development of an embryo without fertilization; especially the development in some ferns of a sporophyte from the gametophyte without fertilization