Question

Which of the following is responsible for guttation

• A. Root pressure
• B. Omotic pressure
• C. Suction pressure
• D. Capillarity

Answer 1

The correct option is A

Root pressure

The correct option A.

Explanation of correct option:

Root pressure

1. It is the pressure that is exerted by cortical cells of the roots on water and ion sap present in the xylem to move upwards.
2. Water drops exit from the surface of leaves and stems known as guttation.
3. Root pressure is responsible for guttation in plants.

Explanation of incorrect option:

Option B. Osmotic pressure is not responsible for moving sap in one direction or transversely only.

Option C. Suction pressure is responsible for the loss of water in form of vapor.

Option D. Capillarity is not responsible for guttation.

Final Answer: Root pressure is responsible for guttation