ECOLOGICAL AND MORPHOLOGICAL ASPECTS RELATING TO PHYSIOLOGY.

Vivipary is a characteristic feature of mangrove plants . Seeds in these plants germinates within the fruit wall while still attached to the parent tree Phenolic acids and their derivatives are abundant in Burguiela \ and Aricennia seedlings. These phenolic acids protects seedling. They also play a important role in regulation of the development of the viviparous plant Vivipary permits the assimilation of substantial food reserves within the seedling. The development of the seedling provides resistance to unfavourable conditions even after detachment from parent tree. Hypocotyls functions as assimilatory organ in the developing plants. Exposure of seedling to the water delays establishment. Seedling in mangrove provides capacity to tolerate a complete or partial anarerobic conditions for varying periods and togrow successfully after such exposure.