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In many plants and algae, the nonsexual phase in the alternation of generations, or an individual representing the phase. The alternate, sexual phase is the gametophyte. In the sporophyte phase, a diploid (seeploidy) plant body grows and eventually produces spores through meiosis. These spores divide by mitosis to produce haploid gametophytes, which then can carry out sexual reproduction.
This entry comes from Encyclopædia Britannica Concise. For the full entry on sporophyte, visit Britannica.com.