Question

which process occurs during the light - dependent reactions in photosynthesis?
water molecules are split.
carbon fixation occurs.
pga is reduced.
rubp is regenerated.

Explanation:

In the light - dependent reactions of photosynthesis, light energy is used to split water molecules. Carbon fixation, PGA reduction, and RuBP regeneration occur in the light - independent reactions (Calvin cycle).

Answer:

Water molecules are split.