Question

Products that were made in the light reactions of photosynthesis, but are required by the
dark reactions

are ____ and ____
- oxygen and ATP
- oxygen and water
- oxygen and NADPH
- ATP and NADPH

Answer 1

Answer: ATP and NADPH

Explanation: Photosynthesis in higher plants involves two processes: light reactions which occurs only when plants are illuminated and carbon fixation reactions which are driven by products of light reactions.

In light reactions, chlorophyll and other pigments absorb light and conserve it as ATP and NADPH while oxygen is liberated but in carbon fixation reactions, ATP and NADPH are used to reduce carbon dioxide to form triose phosphates, starch, sucrose and other products derived from them.