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.
The equation for photosynthesis is below. Now if you look at the product side (to the right of the arrow), you will see that two things are produced in photosynthesis: Oxygen and Glucose. However, the oxygen that is produced in photosynthesis is released to the enviroment, leaving you with glucose. So, photosynthesis basically produces oxygen to release into the enviroment, and a carbohydrate (gives energy) for the plant. So to answer your question, the main product in photosynthesis is a carbohydrate. Hope this helps!