When there is a water shortage, plants act to conserve water by producing the drought stress hormone ABA to close their stomata. Coincidentally, the closure of stomata also obstructs the preferred ...

When there’s no light available for photosynthesis, the plant closes its stomata so it doesn’t lose water through evaporation. Biologists suspected that the speed at which the guard cells react to ...

Stomata are like windows on the surface of leaves: they close to prevent water vapour loss during transpiration, but open to allow CO 2 uptake for photosynthesis. The stomatal pore aperture ...

When temperatures are high, the stomata open to cool down. In dry conditions, they close to prevent water loss. So, when conditions are dry and hot, this may evoke conflicting—and therefore less ...

In this field of view, there are 12 stomata - nine open and three closed. The images show the fields of view of a plant leaf viewed with a microscope. Count the number of stomata in each sample.

their numbers, density and distribution on upper and lower surfaces numbers that are open and closed at any time adaptations ... are two methods with which stomata can be counted.