Question

Describe the light reactions involved in plant photosynthesis.

Answer 1

The main purpose of the light reaction is to generate organic energy molecules such as ATP and NADPH which are needed for the subsequent dark reaction. Chlorophyll absorbs the red and blue segment of the white light and photosynthesis occurs most efficiently at these wavelengths.

Answer 2

many plant physiologist in the past held the view that oxygen released in photosynthesis came from the decomposition of carbon dioxide in light.the equivalence between oxygen released and oxygen of carbon dioxide absorbed made this assumption plausible.this concept was ,however ,soon found to be enormous.

2h2A+CO2light/chlorophyll 2A+(CH2O)+H2O