Question

The pores in the stomata are surrounded by bean shaped cells called _____ cells.

Answer 1

Stomata:

1. Stomata are tiny pores or openings present on the surface of the leaf that regulate the exchange of gases.
2. Guard cells are specialized kidney or bean shaped cells surrounding the stomata.
3. They are triggered by sunlight and regulate the rate of transpiration by opening and closing of stomata by change in turgor pressure.
4. During daytime, in the presence of light, the stomatal pore opens by taking in water by the process of osmosis and increases the turgidity of the cell.
5. During night time, in the absence of light, the stomatal pores close as they lose water and decrease the turgidity of the cell.

Final answer: The pores in the stomata are surrounded by bean shaped cells called guard cells.