Question

Which elements are essential for photolysis of water?

• A. $Mg$ and $P$
• B. $Ca$ and $Mg$
• C. $Zn$ and $Mg$
• D. $Mn$ and $Cl$

Answer 1

Answer: (D)

$Mn$ and $Cl$

Photolysis of water occurs during non cyclic electron flow. During non cyclic electron flow, the ultimate source of electrons is water. The water molecule is split in a process, called as photolysis. The electrons are ultimately used in reduction of oxidised NADP to form reduced $NADP{H}_2$. The oxygen is released as a byproduct of photosynthesis. The mineral ions essential for photolysis are manganese, chlorine and calcium.