During photosynthesis,the oxygen evolved is r | vedclass

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(A) The oxygen released during photosynthesis comes from the photolysis of water $(H_2O)$.This was experimentally proven by $C$.$B$. van Niel,who stud

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$H_2O$

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(A) The oxygen released during photosynthesis comes from the photolysis of water $(H_2O)$.This was experimentally proven by $C$.$B$. van Niel,who studied purple and green sulfur bacteria.He demonstrated that in these bacteria,when $H_2S$ is used instead of $H_2O$,sulfur or sulfate is produced instead of oxygen.This led to the conclusion that in green plants,the oxygen evolved during photosynthesis originates from water $(H_2O)$ and not from carbon dioxide $(CO_2)$.

During photosynthesis,the oxygen evolved is released from $...........$.

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