Root pressure is due to

Options

(a) passive transport
(b) gravitation
(c) active transport
(d) diffusion

Correct Answer:

active transport

Explanation:

As various ions from the soil are actively transported into the vascular tissues of the roots, water follows its potential gradient and increases the pressure inside the xylem. This positive pressure is called root pressure, and can be responsible for pushing up water to small heights in the stem.