Ferns
Ferns are a door in the plant community, about twenty thousand species, belonging to vascular plants. Ferns (ferns) have more real leaves than primitive Shixingmen, but lack of seeds compared to more evolved seed plants (gymnosperms and angiosperms). Like all vascular plants, ferns have a generation of alternating life cycles that are circulated by two sets of sporophytes and a single set of gametes. Unlike gymnosperms and angiosperms, the gametophyte is a free organ. The typical life cycle of the ferns is as follows: ▪ Sporophytes (two sets) produce a single set of spores via meiosis; • Spores form gametes through cell division - which typically contain photosynthetic primary leaves; ▪ Gametes pass through Mitotic produce germ cells (usually spermatozoa and eggs will not be from the same original leaf, because the same original leaf of the possession of the container and the eggplant mature time is different); ▪ moveable, flagellated sperm so that still stick to the original leaves Body fertilized eggs; ▪ fertilized eggs form a double set of fertilized eggs and grow into spores (usually seen by ferns) through mitosis. ...