Final answer:
Sporophyte cells produce haploid spores by meiosis in the alternation of generations life cycle.
Step-by-step explanation:
The sporophyte cells produce haploid spores by meiosis.
During meiosis, the diploid sporocytes, or mother cells, undergo cell division to produce haploid spores. Meiosis is a type of cell division that reduces the chromosome number from diploid (2n) to haploid (n). The haploid spores are later released by the sporangia and dispersed in the environment.
This process is part of the alternation of generations life cycle, where the sporophyte generation produces spores, which develop into the gametophyte generation.