Gymnosperms
Gymnosperm refers to plants in the seed plants, ovules on the edge of an open spore leaf or foliage, and the spores are usually arranged in a rounded shape. Gymnosperms have a total of six doors of about 14 families and 88 species of more than one thousand species, another major group of seed plants for the angiosperms, and the ovules are in the carpels (an edge of the intercellular cotyledons) within. The name of the gymnosperm from the Greek "gymnospermos" means "bare seed" because the seed of the gymnosper has been exposed from the beginning of the ovule. Gymnospermia produces spores, "microspores" that grow into pollen, and "big spores" that remain in the ovules. When the fertilization (combination of megaspore and microspores), the formation of germ and other cells will be composed of ovules, and the development of seeds. ...