What are the types of transpiration?

Explanation

Types of Transpiration : Transpiration is of following three types:
1. Stomatal transpiration: Stomata are microscopic structures present in high number on the lower epidermis of leaves. This is the most dominant form of transpiration and being responsible for most of the water loss ( 90-95%) in plants.
2. Lenticular transpiration: In stems of woody plants and trees, the epidermis is replaced by periderm because of secondary growth. In order to provide gaseous exchange between the living cells and outer atmosphere, some pores which looks like lens-shaped raised spots are present on the surface of the stem called Lenticels. The loss of water from lenticels is very insignificant as it amounts to only 0.1% of the total.
3. Cuticular transpiration : The cuticle is a waxy or resinous layer of cutin, a fatty substance covering the epidermis of leaves and other plant parts. Loss of water through cuticle is relatively small and it is only about 5 to 10% of the total transpiration. The thickness of cuticle increase in xerophytes and transpiration is very much reduced or totally absent.