Respuesta :

Pneumatophore roots allow mangroves to gather oxygen from the atmosphere even if the soil or mud their in are flooded. The mud where mangrove grows are anaerobic which has poor in oxygen. Oxygen is vital for the survival of mangroves. Some of these roots erect upward. 

Answer:

Mangrove pneumatophore is the specialized root structures that are known to grow out of the water surface and help in the respiration of mangrove plants. They allow the collect oxygen from the atmosphere.  

It mainly grows in mud and there the conditions are anaerobic means lack of oxygen. Oxygen is necessary for their survival that is done by the mangrove pneumatophore roots.