* Photosynthesis is the process where plants use sunlight, water, and carbon dioxide to create glucose (sugar) and oxygen.

* Glucose is the primary product of photosynthesis, providing energy for the plant.

* Oxygen is a byproduct of photosynthesis, released as a gas.

So while oxygen is important for many living things, it's not the product of photosynthesis itself, but rather a result of the process.