Which two statements best describe fertilization and meiosis in the life cycle of plants? I. These processes are part of the life cycle. II. These processes produce gametophytes. III. Fertilization produces a zygote, and meiosis produces haploid spores. IV. Fertilization is used only by seedless plants; meiosis is used only by seed plants.

Fertilization and meiosis are both part of the plant life cycle, so statement I is true. Fertilization joins gametes to form a zygote, while meiosis produces haploid spores, making statement III true. Spores can grow into gametophytes, but the processes do not directly produce them. Both processes occur in seed and seedless plants, so statement IV is false.

AI-written and checked against the verified answer.