Question

Aerenchyma is helpful in plants by

• A. Providing buoyancy in hydrophytes
• B. Absorption in stilt roots
• C. Giving mechanical strength to plants
• D. Giving flexibility to plants

Answer 1

Answer: (A)

Providing buoyancy in hydrophytes

Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. It provides buoyancy to hydrophytes, so they can float to the upper surface of water.