29/05/2026
🌱 Photosynthesis as a multi-step physico-chemical process where plants convert light energy into chemical energy to produce organic compounds. It characterizes the reaction as anabolic and endergonic, involving the oxidation of water and the reduction of carbon dioxide. Historical experiments by scientists like Priestley, Ingenhousz, and Sachs are highlighted to demonstrate the necessity of sunlight, chlorophyll, and air for plant growth and starch production. Furthermore, the source details how Cornelius van Niel and later researchers used radioisotopes to prove that the oxygen released during this process originates from water rather than carbon dioxide. Finally, it notes that while this activity primarily occurs in leaves, it can take place in any green part of a plant containing chloroplasts.
Basic concept
plantphysiology
18/03/2026