Photosynthesis is a process that, although we have all heard it mentioned numerous times, not everyone knows in depth. And it is something to which it is worth spending a few minutes, since it is one of the main responsible for that life on our planet is as it is now.
If you want to learn more about where photosynthesis occurs or how it takes place, join us in this Green Ecologist article in which we clarify what is photosynthesis, its process and its importance, enter more details.
To begin with, it must be clarified that photosynthesis is a process by which plant organisms and some bacteria are capable of create organic matter from inorganic matter and light. This is what differentiates the autotrophic organisms, capable of synthesizing their own food from inorganic substances, from heterotrophs, which need to feed on autotrophic organisms or other heterotrophs. We recommend you read these other articles by Green Ecologist about autotrophic organisms: what they are, characteristics and examples and the difference between autotrophic and heterotrophic organisms with examples.
Like any chemical process, photosynthesis has its formula. In this case, it is the same in all plants and organisms capable of carrying it out:
6 H2O + 6 CO2 + light = C6H12O6 + 6 O2
What does this all mean? That to carry out the elementary step of photosynthesis, 6 molecules of water (H2O), 6 molecules of carbon dioxide (CO2) are necessary, and the contribution of photons, or light energy. Thanks to chloroplasts and the photosynthesis process, these ingredients end up being transformed into a glucose molecule (C6H12O6) and 6 oxygen molecules (02). Oxygen is expelled back into the atmosphere, while glucose is used to provide energy to the plant and produce compounds such as proteins, starch or lipids, among others.
So what are the products that result from photosynthesis? The products resulting from this process are glucose and oxygen.
There are some stages of photosynthesis. When we refer to the photosynthesis of plants, which is the most common, we differentiate 4 main stages: absorption, circulation, photosynthesis and feeding.
The importance of photosynthesis it is vital on our planet. Without the action over millions of years of the first photosynthetic organisms, the atmosphere would not have been loaded with oxygen levels that allowed the formation of the ozone layer. Without the ozone layer, the sun's ultraviolet radiation would not have allowed life on Earth, relegating the possibilities of subsistence to aquatic organisms, protected from UV rays.
Photosynthesis is responsible for the oxygen that allows us to live to all animals. However, it is easy to fall into the error of thinking that the great forest masses of the planet are responsible for a good part of the oxygen production, since this is not the case. Large forests and jungles are important and vital for many other reasons, but the reality is that the respiration of plants and the large amount of life they contain end up resulting in their positive oxygen supply being quite reduced.
To find the basis for the production of oxygen on Earth, you have to go precisely to the sea, and know how to look at very small things. Phytoplankton It is made up of unicellular algae and photosynthetic cyanobacteria that cannot be seen with the naked eye and that, nevertheless, are the irreplaceable basis of the marine food chain and oxygen production on our planet. Between 50% and 85% of the oxygen currently produced on the planet is released by these autotrophic microorganisms, to which we owe practically everything. Here you can learn more about what is phytoplankton.
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