Unlike any animal, which attracts the immediate curiosity of children and adults because basically there are frequent similarities with the human animal, a plant does not always arouse sensations.
In terrestrial environments, flower plants predominate, that is, plants that have organized a particular reproduction mechanism that provides for the formation of seeds.
Plants with seeds (Spermatophytes) are the main primary producers of the environment in which man lives who, as a consumer, depend directly on them (fruits, seeds, vegetables) or indirectly (products of the farm, hunting). When we think of a flower or a plant, we usually refer to the color, the shape, the pro-smoking, underestimating all the other relationships of dependence that exist between plants and man, the philae uses them as a source of food, building materials, textile fibers, medicines.
The evolution of human society has produced an extreme division of labor, with a progressive specialization. The primary need, that of nutrition, has been resolved, with the development of agriculture, thus allowing to devote a large part of the energy to improving the standard of living of the population. The history of man is linked precisely to the ability to produce economically and to be able to accumulate stocks for critical periods. The full granaries in the territories of the fertile crescent (area between the Nile, the eastern Mediterranean coast and the course of Tigris and Euphrates), meant not only wealth, but also, as today, constituted they were a strategic asset that allowed to maintain an army in defense of the territories against the raids of nomadic marauders. In Jarmo, in present-day Iraq, the remains of two types of wheat and one of barley have been found, even attributable to 7000 years BC.
Agriculture has brought about a great change in human history:
as a gatherer-hunter, as a nomad who followed his prey, he permanently fixed his home, raising animals and cultivating the land. Plants used for animal fodder or for human feeding are all flowering plants or, as we have already pointed out, plants with seeds and fruits. These seeds and fruits represent the part that can be preserved, rich in substances intended to feed the seedling when it begins to develop and which instead man uses as his own nourishment.
It is no coincidence that the dawn of civilization saw the cultivation of cereals, undemanding, annual plants, easy to keep as a seed from year to year and to transport. But, they say, one does not live by bread alone; man needed tools for agriculture, and these were obtained from the wood of the trees; houses and warehouses were needed, therefore trunks and branches; fire was needed to cook bread, food and even clay with which to make the vessels for the conservation of crops, and the fuel was of vegetable origin. With the improvement of living conditions the exchanges deepened; serving means of transport more capable than the back of a donkey or a dromedary, ships were built with the wood of the trees (for a long time the transport with wagons would have been limited by the lack of roads and the difficulty of attaching animals to the wagon itself). The demands became more and more sophisticated; wool was preferred to animal skins, then linen and cotton fabrics. From the vegetable fibers the ropes for the ships and the sails that pushed them from one landing to the other were obtained, with the holds full of oil jars and granary amphorae. The oil squeezed from olives served not only as a food but also to brighten the nights of antiquity and to dissolve ointments, balms and perfumes.
Medicines were obtained from plants to resolve ailments and ailments, surgeons knew plants to obtain a quick and better healing. Just the need to correctly recognize medicinal plants will stimulate the birth of that science called botany.
The products of flower plants and their derivatives have accompanied human life through its history, providing food and material for clothes, but also as voluptuous elements or not related to close survival; so we think of spices, stimulating drinks such as tea or coffee. The selection made on cultivated plants has allowed us to obtain ever better and more efficient varieties, but far from wild progenitors, such as corn. Just in the corn
scientists managed to manipulate the genetic makeup with bioengineering procedures; this in order to make the plant, which is unable to do it naturally, produce a certain amount of an essential substance, the amino acid lysine, which is accumulated in the fruit, thus providing a complete food for humans and animals.
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