Write an experiment that shows that sunlight is important for photosynthesis.
Experiment to prove that sunlight is essential for photosynthesis:
PROCEDURE:
Step 1: Keep the plant in a dark room:
Keep a healthy green plant in a dark room for 24-48 hours. This is done to make sure that the plant uitilises all the stored food and the leaves become devoid of any starch.
Step 2: Cover a particular part of any leaf:
Cover a part of any leaf of this plant on both the sides with a piece of black paper firmly fixed to the leaf blade.
Step 3: Expose the plant to sunlight:
Now the plant is exposed to bright sunlight with the specific part of the leaf staying covered.
Step 4: Decolorise the leaf:
After few hours, remove the leaf and decolorise it in boiling water, using alcohol.
Step 5: Add iodine solution:
This is done to test the presence of starch in the leaf.
OBSERVATION:
We will observe that the portion of the leaf that was covered with the black paper did not show any presence of starch.
INFERENCE: