Photosynthesis
Photosynthesis the word photosynthesis is a combination of two Greek words, photos (meaning: light; here sunlight) and synthesis (meaning: synthesis, or making). Analyzing the word photosynthesis again, it is seen that the word light means - the presence of sunlight, and the word synthesis means - something is produced. In a word, photosynthesis means chemical synthesis in the presence of sunlight. Photosynthesis is the biochemical process by which green plant cells react with carbon dioxide (CO2) and water absorbed by the roots in the presence of sunlight to synthesize sugary foods and release the same amount of oxygen as carbon dioxide.
Reaction of photosynthesis: 6 CO2 + 12 H2O + Heat → C6H12O6 + 6H2O + 6O2
In this process, the pigment called chlorophyll in living plant cells converts light energy into chemical energy and stores it in the form of stagnant energy in the sugary food produced. This energy subsequently helps in the secondary nutrition of animals by carnivorous plants. The process of photosynthesis is the primary food source of the living world. Apart from green plants, this process is also observed in some germs and protozoa. Photosynthesis of plants takes place during the day, and the amount of chlorophyll in the leaves controls the rate of photosynthesis.
Some types of bacteria, algae, and higher plants, which contain photosynthetic pigments, are capable of photosynthesis. Although photosynthesis occurs mainly in the leaves, it can also occur in the roots or stems of some plants. Although photosynthesis occurs in green plants, some unicellular organisms, such as Euglena, Chryso-Amoeba, etc., contain chlorophyll to produce food. Plants that do not contain chlorophyll are incapable of photosynthesis. Aquatic plants have higher photosynthesis because of higher carbon dioxide levels in the water. [Mohammed Almujaddade Alfasane]
