What chromosome set is characteristic for spores, gametophytes and sporophytes of moss cuckoo flax? From what source cells and as a result of what division do these stages of moss development form?
1) Spore and gametophyte moss contain a haploid set of chromosomes, and the sporophyte is diploid.
2) A spore is formed as a result of meiosis from spore-bearing sporophyte cells, and a gametophyte is formed from spore by mitosis.
3) Sporophyte is formed after fertilization from the zygote by mitosis.
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