Title: Section 2: Part 1
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Content: Male gametes are sperm, and female gametes are eggs. In the plant life cycle, meiosis produces haploid spores. The spores develop into the gametophyte phase of the plant life cycle. The term gametophyte literally means “gamete-producing plant.“ The size of individual gametophytes ranges from three cells in angiosperm pollen to several million in a nonvascular plant such as moss. The gametophyte undergoes mitosis to produce gametes. During fertilization, gametes fuse together to produce the diploid sporophyte (spore-producing) phase. Within the plant kingdom, the dominance of phases varies. Nonvascular plants, which include the mosses and liverworts, have the dominant gametophyte phase. Vascular plants show a progression of increasing sporophyte dominance from the ferns and fern allies to angiosperms.