The one very important pigment in plants responsible for the green color of the plant is called chlorophyll.
The major role of chlorophyll is to capture light energy from the sun and prepare its own food through the photosynthesis process.
Chlorophyll occurs in several forms like chlorophylls a and b, and chlorophylls c and d are present in higher plants and green algae.
Chlorophyll present in the chloroplast helps in the light-harvesting complex of photosystems I and II, energy transfer that is from light energy to chemical energy, and photochemical redox reaction.