The importance of plants
Why are plants important?
What are plants?
Plants are living organisms belonging to the vegetal kingdom that can live on land or in water.
Resulting from this process is oxygen, a waste product that comes from the decomposition of water. Oxygen, which is formed by the reaction between carbon dioxide and water, is expelled from plants through the stomata of the leaves. Photosynthesis needs the energy that the plant takes from the sun.
Plants have many different forms. Some are called trees, others as known as herbs, others have a bushy form, some are known as lianas or simply as flowers. According to its height, if they are softer or harder or how we use them, etc, they are called with different names.
Importance of plants
Plants have had and still have a key role in the history of life on Earth. They are responsible for the presence of oxygen, a gas needed for most organism who currently inhabit our planet and need it to breathe. But this was not always so. At first, the earth's atmosphere had almost no oxygen and was particularly rich in carbon dioxide (CO2), in the form of water-steam (H2O) and nitrogen (N). This atmosphere would be unbreathable for most species that today need oxygen to live.
Evolution of plants
Plants continued to evolve, adding oxygen to the atmosphere. They were abie to develop seeds. Plants that produce fruits are called Spermatophyta. The most primitive ones don't have the seeds confined inside the fruits and are known as Gymnosperms or " plants without flowers". The most highly evolved plants are called Angiosperms or " flowering plants". They produce seeds shut in fruits.
Plants at the base of the food chain
Life on earth depends on plants. Humans, like other animals, can not feed themselves. Directly or indirectly, what they eat comes from plants.
Trophic pyramid (ecological pyramid) drawing
Plants and food production
Humans depend, directly or indirectly, from plants. When we eat animal flesh, it comes from an animal that has been fed on grass. When we eat plant food, these are produced directly by plants. Million people around the world can be sustained on plants producing cereals,. This is the reason why wheat is the most important food in the western world, corn in many parts of America, or rice has become the first Asian food.
Plants and industry
Many industrial products derive from plants. Among the many industrial uses of plants, we can mention the following: wood for furniture, beams, doors, etc., paper pulp, fibers such as hemp, cotton, linen, etc., wood or coal; industry uses components such as tannin for tanning leather, pigments and varnishes, soaps, perfumes, shampoos, essential oils for the cosmetics industry; rubbers, lubricants, plastics for the automotive industry.
Medicinals and poisonous plants
The properties of medicinal plants have been used since ancient times to cure diseases. At present, in technologically advanced countries like the United States, an estimated 60% of its population use medicinal plants to combat certain diseases.
It is also increasingly recognized the importance of plants in the maintenance of health, up to the point that sometimes the line between food and medicine is very thin. Garlic is a world-renowned species, but at the same time, it is one of the best natural antibiotics. Plants play an important role in disease prevention.
(More information about Importance of medicinal plants)
Cultivation of plants
The discovery of agriculture or cultivation of plants is dated over 9000 years ago in the valleys of the Tigris and Euphrates, in a zone which would occupy the area that today belongs to the countries of Iraq, Syria and southern Turkey. Later, about 7000 years BC, it was developed in the valley of the Nile
More information about plants in the above listing.
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This material is for informational purposes only. In case of doubt, consult the doctor.