Final answer:
Photosynthesis involves the conversion of light energy into chemical energy.
Step-by-step explanation:
During photosynthesis, the energy transformation that occurs can be described as the conversion of light energy into chemical energy. Plants and other photosynthetic organisms absorb light energy from the sun through pigments like chlorophyll. This light energy is then used to convert carbon dioxide and water into glucose, a form of chemical energy that can be stored and used by the organism.