Question

for experimenting the difficult materials necessary for photosynthesis we keep the plants in dark room for few days .why ?

Answer 1

Answer:

In order to prevent the previously formed starch from interfering, we remove the starch and it is done by keeping the plant in dark. When the plant is in dark, the photosynthesis does not occur and the stored starch is used up.

Explanation:

Oxygen is released during photosynthesis. ... Hence before starting an experiment on photosynthesis, the plant should be placed in the dark for 24-48 hours to destarch the leaves. During this period, all the starch from the leaves will be sent to the storage organs and the leaves will not show the presence of starch.