Question

Activity 6.1
Take a potted plant with variegated leaves - for example, money plant
or crotons.
Keep the plant in a dark room for three days so that all the starch
gets used up.
Now keep the plant in sunlight for about six hours.
- Pluck a leaf from the plant. Mark the green areas in it and trace them
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.
Observe the colour of the leaf and compare this with the tracing of
the leaf done in the beginning (Fig. 6.2).
What can you conclude about the presence of starch in various areas
of the leaf?​

Answer 1

Answer:

ur last answer:-

The leaves of the plant are now tested for the presence of starch. If starch is present, then it has been synthesized by photosynthesis. We can then conclude that the presence of starch indicates that photosynthesis has taken place.

Answer 2

Explanation:

take a potted plant with variegated leaves-for example money plant or crotons