Open (left) and closed (right) stomata found on the surface of plants' leaves, stems and other organs. Through the stomata, plants exchange oxygen and carbon dioxide, and lose more than 95 percent ...

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 ...

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 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 ...

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.

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.