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Answer:aim:to show that carbon dioxide is necessary for photosynthesis
KOH absorbs carbon dioxide... so we use it
The apparatus must be airtight or else carbon dioxide may enter the apparatus and nothing can be differentiated between the two parts of the leaves
The half part of the lead us kept in water in order to allow it to photosynthesize
The part of the leaf inside the cork will not show any presence of starch
Don't know who performed the experiment for the first time
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