Criteria | Lenticels | Stomata |
Shape | Lenticel is a lens-shaped opening. | Stomata is a bean-shaped opening in dicots and dumb-bell shaped opening in monocots. |
Types of cells involved | Lenticels are formed by the rupturing of epidermis by the underlying parenchymatous cells. | When water enters the guard cells, they swell up and cause the opening of the stomatal pore. |
Function | Lenticels allow the exchange of gases between the tissue present internal to the stem and the outer atmosphere. | Stomata also helps in exchange of gases, apart from that, it is also involved in transpiration. |
Location | Lenticels are present in woody stem. | Stomata is present on the surface of leaf or green stem. |