1. Full of or characterized by animation, vigor, or courage: a spirited debate. 2. Having a specified mood or nature. Used in combination: high-spirited; low-spirited.
One product of photosynthesis is glucose (sugar), which provides the basis for most food chains. The second product of photosynthesis is oxygen which comes in handy if your happen to be an aerobic organism that requires oxygen for survival.
Photosynthesis. Photosynthesis is the process by which plants make and store their food. With the help of a green substance called chlorophyll, the heat of the sun is combined with carbon dioxide and water and converted to sugar and starch. The process releases oxygen as a waste product.