Photosynthesis and Energy
Photosynthesis is one of the most fundamental processes to help in the sustainability of life on earth. This process converts luminous energy originating from the sun into stable chemical energy. Being light their primary soure of energy, green plants, some algae and other microorganisms utilize chlorophyll in a type of cytoplasmic organelle known as chloroplast to convert inorganic matter, like atmospheric carbon dioxide and water, into organic matter, such as glucose, lipids, and proteins. Oxygen , which is basic for respiration, is a “waste” product of this whole process.
The great majority of orgnisms to carry out photosynthesis are denominated photoautotrophs, many of them which are green plants. In their ecosystems, green plants are primary produces, for they are the main or “primary” source of energy for other organisms. This is not only because they are consumed by heterotophs, but also becasue they provide the necessary oxygen for aerobic cellular respiration to take place.
Therefore, photoautotrophs utilize the sun’s energy to supply indispensible organic matter and vital oxygen. These components are consumed and absorbed by other organisms to use for energy and survival. In short words, food webs lead back to the energy produced by plants and microbes through photosynthesis.