Question

Which of the following sequences correctly portrays the flow of electrons during photosynthesis?

• A. $H_{2}O$ $\to$ NADPH $\to$ Calvin cycle
• B. NADPH $\to$ chlorophyll $\to$ Calvin cycle
• C. $H_{2}O$ $\to$ photosystem-I $\to$ photosystem-II
• D. NADPH $\to$ electron transport chain $\to$ $O_2$

Answer 1

The correct option is A $H_{2}O$ $\to$ NADPH $\to$ Calvin cycle

The H20 taken in by plants is split to oxygen and the electrons released as a result are transferred to the photo centres producing NADPH that then enters into the Calvin cycle.

So, the correct option is, ' H20 → NADPH → Calvin Cycle'.