Here are some possibilities:
* "Gametophyta" is the correct spelling. It refers to the haploid generation in the life cycle of plants that produces gametes (sperm and egg).
* "Gymnosperma" refers to a group of seed-bearing plants, including conifers, cycads, and ginkgoes. They are characterized by unprotected seeds (not enclosed in an ovary).
* "Magnoliophyta" is the scientific name for flowering plants, also known as angiosperms. They produce flowers and fruits to protect their seeds.
If you can provide more context about where you encountered the term "gamophyta," it might be easier to determine the intended word.