Q.

Which of the following is not a product of the light reaction of photosynthesis          [2018]

1 ATP  
2 NADH  
3 NADPH  
4 Oxygen  

Ans.

(2)

In the light reaction of photosynthesis, ATP, NADPH, and oxygen are produced. NADPH participates in anabolic reactions (e.g., photosynthesis) that consume energy in order to build up larger molecules. NADH participates in catabolic reactions (e.g., respiration) that break down molecules to release energy.