Question

The set up shown alongside is a test done to demonstrate transpiration in plants.So it is kept in sunlight for 1 hour and was observed that drops of water appeared on the inside surface of the polythene bag.According to this question answer the following:
i)why was the pot with its soil left uncovered by a polythene bag
ii)why was the pot left uncovered

Answer 1

I) coz process of photosynthesis takes place in leaf only and the need water.
same

Answer 2

The pot with its soil was left uncovered because if the it would have been covered the the soil would also had evaporated water and could not have got accurate results.

Hope it helps....