Question
Root pressure develops due to
-
active absorption
-
low osmotic potential in soil
-
passive absorption
-
increase in transpiration
Solution
A.
active absorption
Root pressure is the positive pressure that develops in the roots of plants by the active absorption of nutrients from the soil. When the nutrients are actively absorbed by root hairs, water (along with minerals) increase the pressure in the xylem. This pressure pushes water up to smell heights.
