Final answer:
During photosynthesis, glyceraldehyde-3-phosphate is stored as starch.
Step-by-step explanation:
During the chemical reactions of photosynthesis, the glyceraldehyde-3-phosphate generated by carbon fixation in the stroma is stored as starch.
Starch is a complex carbohydrate made up of many glucose molecules bonded together. It is a long-term energy storage molecule that plants use to store excess glucose produced during photosynthesis. Starch is stored in the chloroplasts within the plant's cells.
This storage mechanism allows plants to have a readily available source of carbohydrates that can be broken down back into glucose when needed for energy.