Question

(A) Comment upon the mode of pollination in Vallisneria and Zostera. (B)

Hint:

Hydrophilous pollination in aquatic plants like Vallisneria and Zostera ensures efficient pollen transfer through water currents. To prevent self-pollination, plants use strategies such as dioecism, temporal separation, and structural barriers.

Answer 1

(A) Pollination in Vallisneria and Zostera: - Vallisneria and Zostera are aquatic plants that exhibit hydrophilous pollination, meaning they rely on water for pollination.
- In Vallisneria, the male flowers are submerged in the water, and the female flowers float on the surface. Pollination occurs when the male flowers are carried by water currents to the floating female flowers, where they release their pollen.
- In Zostera, pollination also takes place through water currents, with the flowers being partially submerged, allowing for the transfer of pollen between male and female flowers under water.