pneumatophorethat
A pneumatophore is a specialized aerial root that grows upward from a plant's submerged root system. These root structures are typically found in mangroves and other halophytic plants that grow in waterlogged, oxygen-poor soil. The primary function of a pneumatophore is gas exchange. The spongy, porous tissue within the pneumatophore allows for the absorption of oxygen from the atmosphere, which is then transported to the submerged root tissues that lack access to oxygen. This is crucial for the plant's respiration and survival. Pneumatophores often have lenticels, which are small pores on their surface that facilitate this gas exchange. The shape and size of pneumatophores can vary depending on the plant species. Some are peg-like, while others are more conical or branched. Their presence is a key adaptation for plants living in intertidal zones and swamps, enabling them to thrive in environments where other plants would not survive.