the guard cells
The guard cells open and close the stomata as needed.
Stomata
Changes in the osmotic potential of gaurd cells make that stomata open or closed
close
These structures are called stomata, which are small pores present on the surface of plant leaves. Stomata open to allow carbon dioxide to enter the plant for photosynthesis and close to prevent excessive water loss. Oxygen produced during photosynthesis exits the plant through these stomata as well.
Stomata open and close in response to changes in turgor pressure within the guard cells. When guard cells take up water, they become turgid and the stomata open to allow gas exchange. Conversely, when guard cells lose water, they become flaccid and the stomata close to prevent water loss.
stomata
stomata
Plants have stomata, which are small pores on the surface of their leaves that allow for gas exchange and regulate water vapor and carbon dioxide intake. Stomata open to allow for photosynthesis and close to prevent excessive water loss.
Opening and closing of stomata is regulated by concentration of water in guard cells. When transpiration is required, water reaches the guard cells and they swell up. This opens the stomata's pore. When they are not required to be opened, water is not present in guard cells and they shrink causing stomata's pore to close.
maintenance of homeostasis
The Stomata is the small opening on the underside of the left that allows for the absorption of CO2. A plant can open and close the stomata to help cut down on moisture loss.