Question

What is responsible for guttation?

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

Answer 1

The correct option is B

Root pressure

The correct option is (b)

The explanation for the correct option:

• Guttation can be seen mostly in vascular plants i.e., plants containing conducting tissues like xylem and phloem.
• When water droplets are secreted from the pores of vascular plants because of excessive root pressure, the process is called guttation.
• It mostly happens during night when plants too much water. Since, transpiration could not occur during night so water oozes out of the plants on the tips of leaves.

Explanation for incorrect options:

Option A:

Osmotic pressure functions to abstain the inward flow of water molecules across a semi-permeable membrane. It does not have any role in the occurrence of guttation.

Option C:

Suction pressure helps the plants to absorb water. It is caused because of transpiration in plants which helps the plants to draw the water in upward direction.

Option D:

Capillarity helps the plants in the movement of water, gases and other fluids. It also functions in the upward movement of water.

Final answer:

Root pressure in plants is responsible for guttation.