How is pollination carried out in water plants?

Explanation

(i) In many aquatic plants with emergent flowers , pollination occurs by wind and insects.
(ii) In water plants if pollination occurs below the surface of water is called hypohydrophilly e.g., Ceratophyllum.
(iii) In water plants if pollination takes place over the surface of water is called epihydrophily, e.g., Vallisneria spiralis.