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.
What Photosynthesis Is. Photosynthesis is the method by which light energy is converted to chemical energy. Autotrophs, organisms that use energy from sunlight or inorganic substances to make organic compounds, go through photosynthesis.