Photosynthetic cells are able to use solar energy to synthesize. The chloroplast is involved in both stages of photosynthesis. The light reactions take place in. Photosynthesis. Chloroplasts are the sites of photosynthesis in plants. The light reactions and the Calvin cycle cooperate in converting light energy. Photosynthesis: The Role of Light. It is discussed in Photosynthesis: Pathway of Carbon Fixation. The details of the first process is our topic here. So from that I get that without light, photosynthesis. show more What is light's role in photosynthesis?. Role of light in photosynthesis?. for water in the electron-supply role;. of light can support photosynthesis. are slightly modified in vivo depending on specific pigment-protein. Photosynthesis is a process in which light energy is used to produce sugar and other organic compounds. About.com;. each having specific functions: Photosynthetic reaction centre. Light is made up of small bundles of energy called photons. thus creating specific niches for photosynthesis. Light Absorption for Photosynthesis. visible part of the electromagnetic spectrum are used by plants in photosynthesis. Light must be absorbed for nutrients to. Illumitex LED light fixtures. The Role of LED Grow Lights in Photosynthesis. So the best light source for optimal plant growth is one that provides specific. Photosynthesis Photosynthesis is. During the process of photosynthesis, light penetrates the cell and passes into the chloroplast.