We know that plants are harmed by excess water. But plants survive under flooded condition. How are they able to manage excess water?
Some plants are adapted to survive in conditions with excess water and have features that make them acclimatized to it. The stems of these plants are long and keep them above the surface of the water while it is hollow to facilitate the easy passage of gases and foster growth. But only up to a certain limit, Extended waterlogged conditions around the roots can result in the plant's death.