Question

The minerals involved in water splitting reaction during photosynthesis are :

• A. Magnesium and Chlorine
• B. Potassium and Manganese
• C. Molybdenum and Manganese
• D. Manganese and Chlorine

Answer 1

Answer: (D)

Manganese and Chlorine

Answer 2

The phenomenon of breaking up of water into hydrogen and oxygen in the illuminated chloroplast is called photolysis or photocatalytic splitting of water.
Light energy, an oxygen evolving complex $(OEC)$ and an electron carrier are required. Oxygen evolving complex was formerly called $Z$-enzyme. The enzyme has four $Mn$ ions. Liberation of $O_{2}$ also requires two other ions, $Ca^{2+}$ and $Cl^{-}$