Ncert Exercises & Solutions

The process of guttation takes place

1.	when the root pressure is high and the rate of transpiration is low.
2.	when the root pressure is low and the rate of transpiration is high.
3.	when the root pressure equals the rate of transpiration.
4.	when the root pressure as well as rate of transpiration are high.

(a) Guttation occurs when root pressure is high and rate of transpiration is low and there is high humidity in the air.

The other given conditions do not favour guttation.