Plants which produce characteristic pneumatophores and show vivipary belong to:

Step-by-step solution

This is a salt-tolerant plant group that grows in soil or waters of high salinity, coming into contact with saline water through its roots or by salt spray, such as in saline semi-deserts, mangrove swamps, marshes and sloughs and seashores. Halophytes growing in saline soils or near the delta of a river, show: Vivipary which is in-situ seed germination. The seeds, while remaining attached in the mother plant, germinate and then shaded off. Pneumatophores or the breathing roots are for gaseous exchange.