Stomatal Regulation

[peterpan101]

Does anyone know what the hypothesis regarding Stomatal Regulation are ?

[Yacoubb]

I'm not sure if this is what you mean, but stomatal regulation refers to the opening and closing of the stomata, depending upon the turgidity of the guard cells surrounding the stomata. Stomata are pores in the leaves of plants that enable the exchange of gases and water into and out of the cell. When the guard cells fill up with water and become turgor, they open space for gases such as CO₂ to enter the cell, and for H₂O to leave the cell via the transpiration stream. This is also important in controlling the overall rate of photosynthesis; if stomata are always closed, CO₂ will become a limiting factor and limit the rate of photosynthesis.