Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of O2, root growth is restricted or completely stopped. How do the plants growing in marsh lands or swamps obtain their O2 required for root respiration?

Roots obtain oxygen from air in the soil for respiration. In the absen

1.	Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of O2, root growth is restricted or completely stopped. How do the plants growing in marsh lands or swamps obtain their O2 required for root respiration?
Answer» Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of $O_{2}$ , root growth is restricted or completely stopped. How do the plants growing in marsh lands or swamps obtain their $O_{2}$ required for root respiration?