Shaped to make a hole called a stoma when turgid.
==Key Stage 3==
===Meaning===
[[File:LeafCrossSection.png|right|300px|thumb|The '''two guard cells''' can be seen at the [[leaf]].]]
A '''guard cell''' is a [[Specialised Cell|specialised cell]] in a [[plant]] [[leaf]] which contains can change shape to allow or stop gases from getting into the [[leaf]].
Shaped ===Adaptations of the Guard Cell===: '''Guard cells''' can change shape to make open and close a hole called a [[stoma when ]]. ===About Guard Cells===: '''Guard cells''' are shaped with a gap between them called a [[stoma]].: There are more '''guard cells''' found on the bottom of the [[leaf]].: '''Guard cells''' fill with water to become [[turgid]]. This makes the stoma larger. When the [[leaf]] gets dehydrated the '''guard cells''' become [[flaccid]]. This makes the stoma smaller. {| class="wikitable"|-|[[File:GuardCellDiagram.png|center|600px]]|}