What type of pollination takes place in Vallisneria?
(1) Male flowers are carried by water currents to female flowers at surface of water.
(2) Pollination occurs in submerged condition by water.
(3) Flowers emerge above surface of water and pollination occurs by insects.
(4) Flowers emerge above water surface and pollen is carried by wind.
What type of pollination takes place in Vallisneria?
(1) Male flowers are carried by water currents to female flowers at surface of water.
(2) Pollination occurs in submerged condition by water.
(3) Flowers emerge above surface of water and pollination occurs by insects.
(4) Flowers emerge above water surface and pollen is carried by wind.

Option (1) Male flowers are carried by water currents to female flowers at surface of water is the correct answer.

This is because –  Vallisneria shows epihydrophily. Male flowers after breakage float on the surface of water and reach the female flowers.