their numbers, density and distribution on upper and lower surfaces numbers that are open and closed at any time adaptations of plants to environmental conditions, eg desert and water plants effects ...

Plant stomata are pores in the epidermis of plant leaves. They play a key role in regulating the gas-water exchange between the plant and the atmosphere, which enables photosynthesis and transpiration ...

The effect of nitrogen supply on the transpiration rate and stomatal opening of potted bean plants was studied in a series of experiments. The transpiration rates of N-supplied plants were higher than ...

Abscisic acid (ABA) prevents opening of closed stomata and causes open stomata to close. A dual-source model is proposed linking ABA to diurnal stomatal movements. Darkness would favour guard cell ...