7(i)
A potted plant under a bell jar with a watch glass containing potassium hydroxide is placed under sunlight for three hours. After exposure to sunlight none of the leaves of the plant “X” turned blue black when tested with iodine, while the leaves of the control plant “Y” did.
What is the aim of the experiment?
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The aim of the experiment is to prove that carbon dioxide is necessary for photosynthesis.