Photosynthesis in green plants uses the energy from sunlight to convert carbon dioxide,water and minerals into organic food.Photosynthesis occurs in the leaves of plants.The roots take in water from the soil and this goes up the stem to the leaves.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 carbohydrates.These provide nutrition for healthy plant growth.In the process of photosynthesis,oxygen escapes through the tiny holes in the leaf's surface into the atmosphere.