The plant floating inside the jar is a lotus plant.
Aquatic plants are plants that are adapted to survival in water. They can either be free-floating, submerged or attached to surfaces etc.
Free-floating aquatic plants are plants that suspend their leaves or other vegetative part on the water surface.
Examples of free-floating aquatic plants are water hyacinth, water Lily, water lotus etc. Therefore, the plant being described to float in the jar of water is likely a lotus plant.
Learn more about free-floating plants at: https://brainly.com/question/14458301?referrer=searchResults