During the dark reactions of photosynthesis, glucose is produced. Here's a breakdown:

* Light-dependent reactions: These reactions use light energy to create ATP (energy currency) and NADPH (a reducing agent).

* Dark reactions (Calvin Cycle): This is where the ATP and NADPH from the light reactions are used to convert carbon dioxide from the atmosphere into glucose. This process is also known as carbon fixation.

In summary:

* Input: Carbon dioxide, ATP, and NADPH

* Output: Glucose, ADP, and NADP+

The glucose produced in the dark reactions is the primary source of energy for most organisms, and it is used for various processes like growth, respiration, and reproduction.