It's actually the guard cells. Water vapor does go through it, though.
the part who is controlling or control's the opening and the closing of the stoma is the guard cells
Guard cells
a guard cell.
each and every cell
The Nucleus controls the cell.
the nucleus controls all the activity in the cell.
the cell membrane
a guard cell.
a guard cell.
Well if your thinking about were all items enter and exit is through the stoma. The nucleus is the brain of the cell though and controls everything.
There are two guard cells on each stomate. They can open and close the pathway.
Stoma of the leaf.
Stoma of the leaf.
each and every cell
A little round purple thing that controls the inside of the cell.
Guard cells make up the stoma
Stomata for plural, and stoma for singular... Stoma/stomata is a guard cell and it also serves as an opening. source: Biology class... ^^,
The Guard cells
transpirtation