How do underwater plants survive underwater?

Answer:
They have cellular adaptations that make it possible for them to get the chemicals they need underwater. Besides trace nutrients that they obtain from soil around their roots, the main needs of a plant is water (H2O, which they are surrounded by) and carbon dioxide (CO2, which readily dissolves in water). The biggest issue for underwater plants is light, so the deeper and less clear the water, the more challenging it is for plant life to exist.
First answer by ID1659505189. Last edit by Oldog. Contributor trust: 88 [recommend contributor recommended]. Question popularity: 3 [recommend question].