photosynthesis in green plants uses the energy from sunlight to convert carbon dioxide,water and minerals into organic food. photosynthesis occur in the leaves of plants. the roots take in water form the soil and this goes up the stem to the leave. tiny holes in the leaf absorb carbon dioxide from the air. the leaf obtains light energy from the sun's rays. the chloroplasts trap the light energy and use it to manufacture food .the leaf makes caohydrates . these provide nutrition for healthy phant growth . in the process of photosynthesis oxyygen escapes throught the tiny holes in the leaf's surface into the atmosphere.