Question

Take two potted plants. Keep one in the dark for 72 hours and the other in sunlight. Perform
iodine test with the leaves of both the plants.
a) In which of the plants do you observe more starch? Why?
b) Draw a diagram based on this activity

Answer 1

Answer:

B)

Explanation:

draw based activity diagram

Answer 2

Answer:

When a plant is kept in the dark for 72 hours it is denied light which is a condition necessary for photosynthesis. Photosynthesis leas to formation of starch. When an iodine test is carried out for the leaf of the plant kept in the dark, the columns of iodine remain unchanged. This is because of the absence of starch.