* The gamete-producing generation in the life cycle of a plant, i.e. the embryo sac in [[angiosperm|angiosperms]] and the prothallus in [[fern|ferns]]. | * The gamete-producing generation in the life cycle of a plant, i.e. the embryo sac in [[angiosperm|angiosperms]] and the prothallus in [[fern|ferns]]. |