What is hydrophily? Name any hydrophilous plant and give its important characters which help in pollination.

Explanation

It is the transfer of pollen grains from anthers to the stigma through water.
Vallisneria is a hydrophilous, dioecious plant in which male and female flowers are borne on separate plants. The important characteristics of Vallisneria which help in pollination are
(i) Flowers are small, colourless and nectarless.
(ii) Calyx, corolla and other floral parts are the unwettable. Mature male flowers abscise and float on water.
(iii) Stigmas are well-exposed, long and sticky.
(iv) Pollen grains and stigmas are unwettable.
After pollination, female flowers are pulled inside the water.