Question

i) Name the process being studied in the above experimental set-up.
ii)Define the above mention process.
iii)What is the purpose of keeping test tube in the set up B?
iv)The weight of the test tube A and B is taken before and after experiment, what changes would you expect?Justify your answer​

Answer 1

Answer:

1) Transpiration

2) It is the process by which plants lose water as vapors through the aerial parts.

3) As a control experiment.

4) After the experiment, we observe test tube A is raised up i.e., a loss of weight. In test tube B, the weight remains unchanged.

Reason : In test tube A, loses weight due to the plant transpires and loses water. In B there is no plant so there is no transpiration and the oil on the surface prevents direct evaporation and so weight remains unchanged.