Antitranspirants : These are the chemicals which reduce transpiration. These are used to prevent water loss when there is drought. These anti-transpirants are of two types :
1.Surface area of leaf - Leves having larger surface are have more transpiration.
2.Thickness of cuticle - Thick cuticle layer lowers the rate of transpiration.
3. Number of stomata - more the number of transpiration more will be the transpiration.
4. Sunken stomata - lowers the rate of transpiration.