Support System in Aquatic Plants

• Aquatic plants cannot stay upright on land because of their stems which are soft and non-woody.
• Aquatic plants can stay upright in water because their weights are supported by the Buoyancy of water.
• Some aquatic plants have many air sacs in their leaves and stems that make them light so that they can float on water.
• Some aquatic plants have tiny leaves to ensure that they are not disrupted by the flow of water, e.g., Hydrilla.
• Aquatic plants may be distinguished into three groups: (1) submerged plants (2) floating plants and (3) emergent plants.