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 is the conversion of carbon dioxide and water into a sugar called glucose using sunlight energy. Oxygen is produced as a waste product. Chlorophyll is the green chemical needed by plants for this process. You can find out more about producers, consumers and biomass by going to the ecology pages.