Biology 3.1 PhotosynthesisTHIRD LESSON.notebook 1 March 18, 2014 Skill Dev. Stages of Ps Photosynthesis occurs in two stages: 1 1 2 2 the light-dependent reactions the light-independent (dark) reactions Skill Dev. Light Dependent Reactions the first stage of Photosynthesis DO require solar energy (sunlight) click to reveal Skill Dev. Light Dep. 2 solar energy is absorbed by chloroplasts two energy storing molecules are produced (ATP and NADPH) Skill Dev. Light Dep 3 + solar energy is used to split water molecules which results in the release of oxygen (waste product) remove the oxygen from the water to see what is formed Skill Dev. Stages of Ps Image Dark Reactions