| Pneumatophores have lenticels for |
| a) | Excretion | b) | Gaseous exchange |
| c) | Reproduction | d) | All of these |
| (b)A number of mangroove plants possess small negatively geotrophic vertical roots called pneumatophores. Pneumatophores have lenticels for gaseous exchange. They are connected with internal arenchymatous tissue. It is a plant adaptation to saline environment |