Which of the following statements is false?

(I) Vallisneria and Hydrilla are fresh water plants while sea-grasses (e.g. Zostera) are marine plant.

(II) Vallisneria is epihydrophilous while Zostera is hypohydrophilous

(III) Pollination in water lily / Lotus (Nymphea) and Eichhornia (water hyacinth) takes place by insects ~ v

(IV) In majority of aquatic plants flowers emerg above the level of water and are pollinated by insects or wind

(V) In most of the water pollinated species, pollen grains are protected from wetting due to absence of

mucilaginous covering

(VI) In hydrophilous plants pollen grains are spherical