Question

Are air cavities present in plants to help them float?

Answer 1

Air cavities in plants:

1. When large air cavities are present in parenchyma, it is known as aerenchyma.
2. Aerenchyma is found in aquatic plants such as lotus.
3. The cells of aerenchyma allow gaseous exchange between the plant and its surrounding environment.
4. Aerenchyma also helps the plants to float.