Guttation is mainly due to (a) root pressure (b) osmosis (c) transpiration (d) imbibition. (
Option A The loss of water through water stomata (hydathodes) is called as guttation. Guttation occurs when transpiration rate is very low as compared to rate of water absorption, due to this, root pressure is developed and water is pushed out through specialized pores at vein endings called hydathodes. Therefore guttation is not due to the activity of hydathodes but due to root pressure.
