Seed plants reproduce by means of seeds. Examples of seed plants are numerous, and include soybeans, oranges, raspberries, broccoli, prunes, corn, peaches, mangoes, celery, conifers, tangerines, kiwifruit, gooseberries, plums, pumpkins, beets, starfruit, all types of beans, carrots, asparagus, apples, crabapples, swiss chard and more. Most flowers also reproduce through seeds.
The two groups of seed plants include gymnosperms and angiosperms. Both have sexual reproduction, meaning that they have male and female aspects. Gymnosperms produce naked seeds, such as pine. The two types gymnosperms are monocotyledonous (having one cotyledon), and dicotyledonous (having two cotyledons). The parts of a typical seed include embryo, endosperm and seed coat. The embryo is a little plant in an embryonic state and has three parts: plumule, radicle and hypocotyl. When the air, warmth and humidity are available, the embryo develops into a plant. The endosperm is the part which stores food, while the seed coat is an outer layer that covers the seed.
Ideally, seed plants are all those plants that only reproduce by means of seeds. Germination is the process by which the seeds grow. Different seeds can have different times of germination, since some may remain dormant in the soil for long periods of time.