Question

In the experiment to demonstrate root pressure, where did the cut was made on the plant?
A. At the tip
B. Transition zone
C. A few centimeters above the soil
D. A few centimeters below the soil

Answer 1

A potted plant, colored Water, glass tube, knife, rubber, are the material that used to demonstrate the root pressure in the plants. Plants are kept for sometimes water and filled the glass tube with colored Water and marked level connected with the manometer of the glass tube in which the herbaceous plant kept.

Complete answer:
In the xylem upward side of the plants root pressure is the force that drives nutrients and water. And thus force is simply cutting the plant that potted in the ground level and water gushing out from the decapitated plants proved with the help of experiment. Root system that causes sap to rise through a plant stem to the leaves with the process of osmotic pressure (higher concentration to lower concentrations).
The progress of absorption of water and transpiration by the freshly cut leafy twig devoid of any part of the root and generated air bubble that is present in Ganong's potometer. Root hair is grown into the soil and surrounded by the moisture, root hairs help to absorb the water from the soil through the process known as osmosis.

Therefore the correct option is (C).

Note: The root pressure increases up to the mercy level and color of the water rises noted with the manometer. The water level increases as a root pressure and a small magnitude that is induced in the color water shown by the manometer.