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  4. The minerals involved in water splitting reaction during photosynthesis are :

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Q. The minerals involved in water splitting reaction during photosynthesis are :

KEAMKEAM 2010Photosynthesis in Higher Plants

Solution:

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 $Cl^{-}$