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Activity 6.1 (7) Take a potted plant with variegated leaves - for example, money plarr or crotons. (5 Keep the plant in a dark room for three days so that all the staref gets used up. ( Now keep the plant in sunlight for about six hours. Eluck a leaf from the plant. Mark the green areas in it and trace then on a sheet of paper. Dip the leaf in boiling water for a few minutes. After this, immerse it in a beaker containing alcohol. Carefully place the above beaker in a water-bath and heat till the alcohol begins to boil. "What happens to the colour of the leaf? What is the colour' of the solution? Now dip the leaf in a dilute solution of iodine for a few minutes. Take out the leaf and rinse off the iodine solution. (a) (b) Observe the colour of the leaf and compare this with the tracing of Figure $6.2$ the leaf done in the beginning (Fig. 6.2). Variegated leaf(a) before \& What can you conclude about the presence of starch in various areas aking spots of

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Updated on: Jan 17, 2023