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 a process in which plant cells capture light energy to catalyze reactions inside of their chloroplasts that form organic molecules. The compounds formed as a result of photosynthesis can be used by the plant for energy.