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Pine gametophyte (outside) surrounding the embryo (inside). A gametophyte is the haploid multicellular stage in the alternation of generations life cycle of plants and algae. It develops from a spore by mitotic cell division. Spores are the products of meiosis in sporophytes.Gametophytes produce haploid gametes by mitosis.he fusion of male and female gametes produces a diploid zygote, which develops by repeated mitotic cell divisions into a multicellular sporophyte. In bryophytes (mosses, liverworts, and hornworts), the gametophyte represents the longer lived, nutritionally independent and more visible stage of the life cycle.
A sporophyte is a plant that produces spores (asexual reproduction) and a gametophyte is a plant that produces gametes (sexual reproduction). The word gametes refers to sperm and eggs. sporophyte is a plant that produces spores (asexual reproduction) and a gametophyte is a plant that produces gametes (sexual reproduction). The word gametes refers to sperm and eggs.