Consider the following aquatic plants: (i) Water hyacinth (ii) Vallisneria (iii) Water lily (iv) Zostera In which of the above plants do the flowers emerge above the level of water and are pollinated by insects or wind?

Step-by-step solution

Not all aquatic plants use water for pollination. In a majority of aquatic plants such as Water hyacinth and Water lily, the flowers emerge above the level of water and are pollinated by insects or wind, similar to most land plants. Vallisneria and Zostera are examples of water-pollinated plants. In Vallisneria, the female flower reaches the surface of water and pollination occurs at the surface. In Zostera (marine seagrass), the female flowers remain submerged and pollination occurs entirely inside the water. Answ