Question

Guttation is dependent on

• A. Root pressure
• B. Active absorption
• C. Flaccidity of root cortical cells
• D. High rate of transpiration

Answer 1

Answer: (A)

Root pressure

Transpiration is defined as loss of water as gas or vapors from aerial parts, like leaves through the stomatal pore. If there is less of transpiration as due to high atmospheric humidity and the soil is well watered; there will be an increase in root pressure. The increased root pressure leads to oozing out of a solution of minerals from hydathodes (called as guttation) and other openings (called as bleeding).

So, the correct answer is option A.