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Q.
The electron lost by $P_{680}$ in the light reaction of photosynthesis is finally gained by
Photosynthesis in Higher Plants
Solution:
In non-cyclic photophosphorylation electrons liberated from $P _{680}$ are finally accepted by NADP+. NADP+ which has accepted electrons, receives $H ^{+}$ ions, liberated from water and forms NADPH.