What will happen if the supply of oxygen is decreased to an illuminated wheat plant. (1) lts Photosynthesiswould decrease. (2) Its respiration process would stop. (3) All physiological process would stop. (4) Its Photosynthesiswould increase.explain in detail..

Dear student,
Answer is 4) its photosynthesis would increase.
Decreasing the supply of oxygen will increase the photosynthesis in C3 plants like wheat because warburg effect states the inhibitory effect of increasing oxygen concentration on photosynthesis. Oxygen is the competitive inhibitor of carbon dioxide, therefore decrease in the supply of oxygen increases photosynthesis.

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