Question

A parenchymatous cell where large air cavities are present to give buoyancy to aquatic plants are called ​

Answer 1

Explanation:

A parenchymatous cell where large air cavities are present to give buoyancy to aquatic plants are called Aerenchyma Tissue.

Answer 2

Answer: ARENCHYMA

Explanation:    

In aquatic plants, parenchyma cell possess large air filled cavities and air filled intercellular spaces. These cells give buoyancy to plant to float in water. Such cells are then called as aerenchyma