Class 11 Botany simulations · Anatomy of Flowering Plants

Stomata: guard cells at work

Change the turgor of the guard cells and watch the stomatal pore open and close.

Open the simulation

What to notice

The unevenly thickened walls (thick inner wall, thin outer wall) and radially arranged cellulose microfibrils of guard cells make them bow apart when they swell with water.

Key relation

Turgid guard cells → pore opens ; flaccid → pore closes

Try this

Compare the bean-shaped dicot guard cells with the dumb-bell shaped grass guard cells.

What you can change

• Guard cells: choose Bean-shaped (dicot), Dumb-bell shaped (grasses)
• Guard-cell turgor: 0 to 100 %

More in Anatomy of Flowering Plants

• Secondary growth and annual rings
• Dicot vs monocot stem

See all Class 11 Botany simulations or every Physica simulation.