What is photosynthesis?
The synthesis of complex organic compounds from simple organic compounds like water and carbondioxide by green plants in the presence of chlorophyll using sunlight is called photosynthesis.
6CO2+ 6H2O CHO+6O
What is light reaction? Where does it occur
Light reaction also called Light-dependent reaction or Hill's reaction is the first phase of photosynthesis in which production of chemical energy like NADPH2 and ATP take place in the presence of light. This reaction takes place in the grana membranes of the chloroplast.