Aquatic Plants : Those plants which are found in water bodies like rivers, ponds, lakes, sea etc. are called aquatic plants.
For example: lotus, vallisneria, water chesnut, hydrilla, water hyacnith etc.
On the basis of position in water, aquatic plants are divided into three groups :
1. Floating plants, like water hyacinth.
2. Submerged plants, like hydrilla
3. Amphibious plants, like vallisneria.