(1) Carnivorous plants
(2) Free-floating hydrophytes
(3) Halophytes
(4) Submerged hydrophytes
Pneumatophores are respiratory roots which are found in halophytes such as mangroves. plants. Plants having pneumatophores grow in salty marshes. They have lateral roots that grow upward into the air from horizontally secondary roots. These are called as halophytes. These roots are called pneumatophores that have lenticels for exchange of gases