Photosynthesis

Photosynthesis takes place in the chloroplasts within the cells of leaves. The leaves contain a green substance called chlorophyll which is needed for photosynthesis.

During photosynthesis, light energy is used to convert carbon dioxide and water into glucose and oxygen. Plants use the glucose for respiration, growth or to store it as starch. Plants can also combine glucose with nitrogen to make two important substances; amino acids and proteins.

The rate of photosynthesis depends upon three things; the light level, the availability of carbon dioxide and the temperature.