Ch. 24- Reproduction of Seed Plants. Haploid Diploid. I. Reproduction With Cones and Flowers A. Alternation of Generations - All plants have a life cycle in which a diploid sporophyte generation alternates with a haploid gametophyte generation. MEIOSIS. Gametophyte Plant (N).
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Gametophyte Plant (N)
Sporophyte Plant (2N)
2 ovules in which the female gametophytes
a. Fertilization produces a zygote
which grows into an embryo
b. The embryo becomes enclosed in a seed