Question

Comment on the experimental setup

1. What does the setup demonstrate?
2. What will happen to the level of water if a blower is placed close to setup.
3. Will the mercury level fluctuate (go up/down) if phenyl mercuric acetate is sprayed on leaves?

Answer 1

1. The setup demonstrates the process of transpiration pull which is the force when the water pulls upwards from root to leaves.
2. If a blower is placed close to the setup it will provide a wind speed due to which the rate of transpiration will increase the level of water will rise even upwards as the transpiration pull will be more.
3. Phenyl mercuric acetate is an anti-transpirant. If it is sprayed on leaves, transpirational loss of water will stop and mercury levels will remain stable.