What are the examples of hypohydrophilly and epihydrophilly?
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When pollination occurs in submerged plants, it is called hypohydrophily. For example, Ceratophyllum. In Ceratophyllum, the male flowers break and reach the surface of water and dehisce there. The pollen grains then sink in the water and come in contact with the stigma and pollination occurs under water.
Epihydrophily is a pseudo hydrophily that occurs on the surface of the water. Vallisneria pollen grains are released on the surface of the water, which are passively carried away by water currents; some of them eventually reach the female flower. So the correct option is 'epihydrophily'.
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