Seeds are each of the bodies that form part of the fruit that gives rise to a new plant; is the structure through which they carry out the propagation of plants that are called spermatophytes (plants with seed). The seed is produced by the maturation of an ovum of a gymnosperm or an angiosperm. A seed contains an embryo from which a new plant can be developed under appropriate conditions. It also contains a stored food source and is wrapped in a protective cover. Unlike animals, plants are limited in their ability to seek favorable conditions for life and growth. Consequently, they have evolved in a variety of ways to propagate and increase population through seed. A seed must reach the appropriate location at the optimum germination point. These properties that encourage the production of the next generation may be more related to the fruits than to the same seeds, since the typical function of the seed is to serve as a retarding mechanism, allowing to suspend growth if the conditions are not favorable or give the necessary time for its dispersion.