1. By mitosis the diploid embryo will develop into a mature diploid sporophyte, consisting of a capsule (sporangium) and stalk. The sporophyte is dependent on the gametophyte nutritionally.
2.The diploid embryo by mitosis will develop into a mature diploid sporophyte, consisting of a capsule (sporangium) and stalk. The sporophyte is dependent on the gametophyte nutritimally.
3. Haploid spores are produced by meiosis in the capsule. Hygroscopic movement ( due to alternately wetting and drying ) of teeth at the top of the capsule aid in the gradual discharge of the spores. The wind carries them away from the sporophyte and parent gametophyte.
4.A moss spore divides mitotically to produce a long highly branched photosynthetic haploid filament known as a protonema. After several weeks, buds develop into the leafy green haploid moss gametophyte plant.
5.When mature the leafy gametophyte produces male or female reproductive structures at the top of the plant.
6.When mature the leafy gametophyte produces female reproductive structures at the top of the plant.
7.The flask-shaped female reproductive structure, the archegonium, consists of a sterile jacket of cells surrounding a single enclosed haploid egg at its base.
8.When wet by raindrops, the sperm are released from the antheridium into the splash cup and are then splashed onto female gametophytes.
When near an archegonium the sperm are chemically attracted into it and one sperm fertilises the egg.
9.The diploid zygote divides mitotically to form an embryo.
