Question

Which of the following is modified to form air cavities in aquatic plants?

• A. Aerenchyma
• B. Sclerenchyma
• C. Collenchyma
• D. None of the above

Answer 1

The correct option is A Aerenchyma

Sclerenchyma are a type of permanent tissue. They are dead, long, thin narrow cells with thickened walls without any internal space. This tissue makes plant hard and stiff.
Collenchyma cells are living, elongated and irregularly thickened at corners with less intercellular space. It allows easy bending of plant parts without breaking.
In many aquatic plants, parenchyma cells have large air cavities to give buoyancy to the plant and enable them to float in water. Such, parenchyma cells are called as aerenchyma.