Stomata vs Hydathodes (A Comparison Table)
(Similarities and Differences between Stomata and Hydathodes)
Stomata and Hydathodes are specialized pores present in the aerial parts of plants associated with the release of water from the plant body to the surrounding environment.
Stomata: They are specialized pores present on the surface aerial plant parts especially on the lower epidermis of leaf, which facilitate Gaseous exchange and Transpiration. The stomatal pores are guarded by a pair of specialized epidermal cells called the Guard Cells. The guard cells can regulate the opening and closing of the stomatal pore and thereby regulate the gaseous exchange through the stomata.
Hydathode (Water Stomata): Hydathode is a secretory tissue commonly found in the leaves of Angiosperms. They are pore-like structures present on the leaf margin through which water is secreted out as droplets. This type of secretion is called Guttation.
The present post describes the Similarities and Differences between Stomata and Hydathodes with a Comparison Table
Similarities between Stomata and Hydathodes
Ø Both Stomata and Hydathodes are pores which opens to the exterior environment.
Ø Both are primarily present on leaves.
Ø Both stomata and hydathodes are completely composed of living cells.
Ø Both can release water to the atmosphere.
Difference between Stomata and Hydathodes