Question

how the water is excreiate in stomata​

Answer 1

The opening and the closing of the stomata depend upon the necessity of the plant to lose water and heat through transpiration (exit of water vapor means elimination of heat). When the plant has excessive water the guard cells become turgid and the ostiole opens. ... Water enters and goes out the stomata by osmosis.

Answer 2

They are adapted for photosynthesis by having a large surface area, and contain openings, called stomata to allow carbon dioxide into the leaf and oxygen out. ... When water evaporates from the leaves, resulting in more water being drawn up from the roots, it is called transpiration .