Gametes are produced directly by meiosis. Male gametes are sperm.
Female gametes are eggs or ova.
The plant life cycle has mitosis occurring in spores , produced by meiosis, that germinate into the gametophyte phase. Alternation of generations occurs in plants, where the sporophyte phase is succeeded by the gametophyte phase. The sporophyte phase produces spores by meiosis within a sporangium . Within the plant kingdom the dominance of phases varies. Nonvascular plants , the mosses and liverworts, have the gametophyte phase dominant.