Botany - Reproduction in Organisms Question with Solution | TestHub

Transfer of pollen grains from the anther of one flower to the stigma of another flower by the agency of water is called hydrophily. Hydrophily are of two types – hypohydrophily and epihydrophily.
a) Hypohydrophily: In this type, pollination occurs below the water surface. e.g.,Zostera, a hypohydrophilous flower bears elongated needle-like pollen grains without exine.
b) Epihydropily: In this type, pollination occurs on the surface of water. e.g.,Vallisneria.