Unformatted text preview: When spores are mature, the lid of the capsule, called the operculum, opens, and a row or rows of hygroscopic teeth, the peristome, respond to changes of humidity to open and release spores. The single cell haploid spores have sporopollenin in the walls for protection. Each spore germinates and divides to form a filamentous protonema, which develops into the gametophyte. Moss Protonema Young Gametophyte...
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- Fall '09
- Fern, Spore, Gametophyte, Sporophyte, haploid spores