According to the definition of botany, based on wild species have not appeared to human interference, the fruit is formed from the filament (podocarpaceae), which is the filament of the flower (apple), the wall (Pericarp) Which is the same ovary, has changed to a greater or lesser degree and the seeds, which are fertilized and developed eggs, with the embryos of the new facilities. In the wall of the fruit (pericarp) there are three layers of highly variable:
Epicarp
It is an outer layer of the fruit, which generally form what is called a shell;
Mesocarp: the layer that corresponds to the pulp, such as avocado, mango, peach. In many other fruits like papaya and grape pulp it includes the core and the film in which the seeds cling. In orange, lemon and other citrus fruits, the mesocarp layer corresponds to the white, spongy and dry endocarp of the film-forming shoots, which contain fruits rich in substances with a pleasant flavor.
Endocarp: In seeds, fruits, herbs, such as wheat and corn, the three layers of the wall are attached to each other and to the seed pods, forming a single film.
Some fruits are soft, others are covered with hairs, thorns, or feathers. These specialized coatings on their surface can play a key role in seed dispersal. The most obvious case is the fruit that has extensions of wings and, thanks to this, they are driven by the wind at considerable distances. The dispersion of the seeds, and imperative, presupposes a mystery, not yet sufficiently studied, the orientation in the living space, therefore, while the animals move freely, the plant, which is fixed, is born in the place where it will live. The corresponding needs in terms of soil type, humidity, sun, etc.
Nature is incredible and the fact that seeds can survive nature's cruelest attacks makes the cycle continue despite everything that happens. Obviously the evolution and balance of systems through the transformation of organisms is something that calls the tenor of any biologist who boasts that he is passionate about studying nature.
