Photo-oxidation of water in photosynthesis is in association of

Cytochrome

b_{6}

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Pigment system- I

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Pigment system- II

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Plastocyanin

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Solution

The correct option is B Pigment system- II
During non-cyclic electron flow, the electron hole in P- $_{6}$ $_{8}$ $_{0}$ (reaction center of pigment system- II) is filled by electrons obtained by photolysis of water. The photolysis is an oxidative process and means splitting of water in the presence of light to form oxygen, protons and electrons. As a result, there is the evolution of oxygen and the electron move through Mn-protein bound to PS- II.

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