Several of the physiological processes in plants are directly affected by the radiant energy; and photosynthesis is one of them. In addition radiant energy is known to affect protoplasmic streaming, flower induction, chlorophyll synthesis, seed germination and even phototropism. The study of the reactions as affected by light is called photobiology. The sun is the source of energy where reactions [...]
In this article we will discuss about the primary and secondary reactions of photosynthesis. Ruben and his co-workers in early 1943 used 18O and proved that oxygen evolved in photosynthesis came from water. Photosynthesis allowed to proceed in H2O18 and normal CO2, had molecular oxygen evolved with heavy isotopes. When photosynthesis was carried out in the presence of normal H2O [...]
Several experiments can be performed to demonstrate the process of photosynthesis. Usually, the process is demonstrated by the liberation of O2 which is a by-product from a green illuminated water plant. A bunch of Hydrilla plants cut under water are placed under a glass funnel dipping in water with their cut ends directed towards the stem of the funnel. A [...]