Plants discharge water by different parts of body which are explain below,
The cells which are present on stem between bark layers are known as lenticular cells. Only 1 to 2% water release by lenticular cells.
Cuticle cells are present on leaf and play important role in transpiration. Only 5 to 7% water release through these cuticle cells.
Stomata also play great role in transpiration. 90% water transport through these cells.
Tobacco Plant contains 14000 stomata. 40% transpiration takes place through leaf.
In small plants such as grasses when water presents in large quantity then it release water through edges of leaf. This processes is known as guttation.