the guard cells
The guard cells provide the plant with the control mechanisms. The guard cells control the opening and closing of the stomata in plant tissue. Without guard cells, the plants would not be able to control its water intake.
Vent
A volcano or volcanic vent is an opening in the earth's surface that allows melted rock (lava) to flow out.
Vents
Transcriptional control allows a cell to conserve the most resources.
They are called guard cells. They control how much carbon dioxide and water is entering the plant.
Stomata and lenticells
The guard cells provide the plant with the control mechanisms. The guard cells control the opening and closing of the stomata in plant tissue. Without guard cells, the plants would not be able to control its water intake.
Vent
A volcano or volcanic vent is an opening in the earth's surface that allows melted rock (lava) to flow out.
allows a cell to control what substances pass into and out of it?
Opening a file...for writing!
The stoma.
Pupil.
That's called a vent.
The opening in the eye which allows light to pass through is called the pupil.
the stomata's allows the exchange of carbon dioxide or CO2