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 chemical process in which plants, algae, and some microorganisms convert solar energy into chemical energy. A photosynthetic cell uses light energy to form glucose and oxygen gas from carbon dioxide and water.