Question

what is the role of light energy in photosynthesis?

Answer 1

Light energy absorbed by chlorophyll, a photosynthetic pigment of the air containing carbon dioxide and oxygen enters the plant through the leaf stomata. Light is essential for photosynthesis because plants need it energy to create glucose. Light plays an important role in light stage of photosynthesis. The process of taking away the electrons from the molecule is known as oxidation, whereas the process of a molecule obtaining a molecule is called reduction. Plants use light energy to propel water oxidation by generating oxygen gas, hydrogen ions and electrons..

hope dis ans helps u :)
mark me as brainliest plz..

Answer 2

Hi Shivani.
You know that we all live with the help food as well as oxygen. Well photosynthesis helps us by providing food and oxygen. This can only be done with the help of light. In the process of photosynthesis there are two phases. The first one is light dependent phase while the other is light independent phase.
The first phase is carried out in the thyllakoids. This phase is carried out in the presence of light. This light is absorbed by the chlorophll. During this phase the light absorbed activates the chloroplasts and help in the splitting of water. Photon the smallest unit of light energy helps in splitting of water molecules into hydrogen and oxygen ions and in to electrons.
Later this hydrogen ion is used in the conversion of NADP into NADPH and oxygen is released into the atmosphere which we breathe.