Question

The phenomenon related to active water absorption is

• A. Transpiration
• B. Root pressure
• C. Osmotic pressure
• D. Translocation

Answer 1

Answer: (B)

Root pressure

Root pressure is the force in root region that helps to drive water or sap upwards into tracheary elements of xylem. Water is absorbed through the root hairs from the soil. When during low transpiration there is no transpiration pull that time root pressure increases and water moves upwards in xylem elements. Root pressure is actively push up the water to small height in the stem.

So the correct answer is 'Root pressure '.