Lenticels and stomata are both structures found on plant surfaces that facilitate gas exchange, but they differ in their morphology and location.
Lenticels are small, raised, circular or elongated structures on the bark of woody stems and roots of plants that facilitate gas exchange by allowing for the diffusion of gases (oxygen, carbon dioxide, and water vapor) between the atmosphere and the internal tissues of the plant. They are usually located on the stem or root surface, and they are more commonly found in woody dicot plants.
Stomata, on the other hand, are tiny, pores that are primarily found on the surface of leaves but can also be found on the stems and other aerial parts of plants. They are surrounded by two specialized cells known as guard cells which can open or close the pore depending on the needs of the plant, regulating the exchange of gases and water vapor between the plant and the environment. Stomata are more common in monocot and dicot plants and are involved in transpiration, photosynthesis, and gas exchange.
