If a photosynthetic plant releases 18 O_2 mor | vedclass

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(B) The oxygen released during photosynthesis comes from the photolysis of water $(H_2O)$.According to the experiments conducted by Ruben,Hassid,and K

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$H_2^{18}O$

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(B) The oxygen released during photosynthesis comes from the photolysis of water $(H_2O)$.According to the experiments conducted by Ruben,Hassid,and Kamen using the heavy isotope of oxygen $(^{18}O)$,it was proven that the $O_2$ evolved during photosynthesis is derived from water and not from carbon dioxide $(CO_2)$.Therefore,if a plant releases $O_2$ containing the heavy isotope $^{18}O$,it must have been provided with water labeled with the heavy isotope,i.e.,$H_2^{18}O$.

If a photosynthetic plant releases $18$ $O_2$ more than usual,what must the plant have received?

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