• Maximum absorption of light takes place by chlorophyll a.

• Photosynthesis in plants converts solar energy into chemical energy using electrons and protons from water.

• In the chloroplast, chlorophyll a is the pigment that absorbs the sunlight.

• Sunlight is converted to chemical energy in the form of ATP.

• Light energy is converted to chemical energy when a photo-chemically excited special chlorophyll molecule of the photosynthetic reaction center loses an electron, undergoing an oxidation reaction.