Experiment To Show That Chlorophyll Is Necessary For Photosynthesis.



Procedure
Detach a leaf from a variegated plant, which has been exposed to sunlight for at least three (3) hours.

Make a drawing of the leaf in your note show the pattern of green and white areas.

Test a complete leaf for starch.

Make a second drawing of the leaf along side the first to show areas coloured blue-black and orange brown with iodine.





Observation
The blue-black areas of the leaf correspond to the green areas of the leaf.
The white areas of the leaf shows the orange brown colour of the iodine solution.

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Start Of Experiment


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Conclusion
It can be concluded that the green areas of the leave tested positive for the presence of starch due to the presence of chlorophyll. Hence, photosynthesis cannot occur without Chlorophyll.

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