Answer :
DCMU affects the production of oxygen in plants because when compared to the rate produced by the same PFR and no DCMU, DCMU ought to reduce the rate of oxygen production.
Due to dependence on a Photosystem II with insufficient electrons, oxygen production will decrease. Water oxidation and oxygen production will slow down or cease if photosystem II is unable to transfer electrons to the following electron carrier in the thylakoid membrane. (The DCMU blockade might not be entirely successful.)
Water that photosystem II oxidizes provides the electrons that are ultimately employed to assist in the production of sugar, which the plant requires to thrive. Sugar production will halt if photosystem II is unable to provide electrons, and the plant will finally perish.
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