The process of guttation takes place
(a) when the root pressure is high and the rate of transpiration is low
(b) when the root pressure is low and the rate of transpiration is high
(c) when the root pressure equals the rate of transpiration
(d) when the root pressure as well as the rate of transpiration are high.
Guttation can only occur in the absence of transpiration, which is at night. This process releases water droplets while water vapour is lost in the process of
transpiration. The answer is option (a) When the root pressure is high, and the rate of transpiration is low.