with the help of an experiment prove that chlorophyll is necessary for photosynthesis?
To show that chlorophyll is necessary for photosynthesis.
Apparatus and Materials
Plant that has variegated leaves, ethanol, beaker, boiling tube, water, heat source, Iodine solution.
Method / procedure:
- Leave the plant with variegated leaves in light for 2-6 hours.
- Remove one leaf and make a labelled diagram to show the green and non-green parts.
- Test the leaf for starch.
Starch is made only in areas of the leaf with chlorophyll, showing that chlorophyll is necessary for photosynthesis.
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.
The white areas of the leaf shows the orange brown colour of the iodine solution.