Ferns do not reproduce with seeds as do the higher plants but they reproduce with spores . These spores are located on the underside of fronds, the fern's leaf. The ferns are not nearly as plentiful as a natural plant today. Due to vast changes in the earth's atmosphere, natural ferns are found mainly in the tropical climates or in dense forests. There are two groups of seed plants on earth, the gymnosperms and the angiosperms.
Gymnosperms are the plants that are known as evergreens.
They are also known as conifers. The seeds of the gymnosperms are produced in a cone . The seeds are released from the cone when mature. They are not protected once they are released from the cone. Some of the more common plants in this group are pines, cypress, firs and boxwoods.