d Answer:-Hydróphily in vallisnéria:-In vallisnéria, the male flowers scatter and start floating on the surface of water. While the fémale flowers develop under the water and start growing until they reach the surface of water with the help of their stalk. As soon as their stalk grow further, they become horizontal and a hollow dépression develops around that fémale flower. Through jérks the malé flower floating on the surface of water enter into the hollów depréssion, anther then érupts into the stigma and thus, póllination occurs on water.________________________________Extra:-Hydróphily:-Hydróphily is a form of póllination which occurs on the surface of water. This póllination mainly occurs through the FLOW of water. Eg:- Zóstera, vallisnéria, etc.Lets DISCUSS the process of pollination in Zostera:-In Zostera, the POLLENS float on the surface of water. While female flower produce long structures which extend upto the surface of the water and FORMS a coil like structure surrounds these pollens and pulls them UNDERWATER and hence, the pollination occurs.________________________________