Question

The diagram represents an experiment to demonstrate a certain phenomenon in a green plant.

1. Has the level of mercury in the glass tube risen or fallen?
2. Name the life process of the plant which has caused the change in the level of mercury.
3. Define the process named above.
4. State any three advantages of this process to the plant.
5. Which conducting tissue of the plant does the glass tube represent - xylem or phloem?

Answer 1

1. The level of mercury in the glass tube has risen.
2. Transpiration
3. The process of loss of water in the form of vapours from the aerial portions of the living plant is called transpiration.
4. 1. Cooling effect
   2. Suction force
   3. Distribution of water
5. The glass tube represents the xylem, which is the tissue responsible for conducting water and dissolved minerals upward in a plant.