Question

Which is not true for hydrophytes?

• A. Poorly developed root system
• B. Thin membranous leaves
• C. Poorly developed large air spaces
• D. Poorly developed vascular bundles.

Answer 1

The correct option is C Poorly developed large air spaces

Hydrophytes grow submerged or partially submerged in water. Stems and leaves have large air spaces, forming a reservoir of oxygen and carbon dioxide. These gases also provide buoyancy to the plant tissues, when submerged hydrophytes, such as the water lily. An example is the water lily, which is rooted to the mud at the bottom of a pond and has floating leaves on the surface of the water. As water is a supportive medium, they have little or no lignified support tissues. Surrounded by water there is little need for transport tissue, so xylem is poorly developed. Leaves have little or no cuticle. Stomata are found on the upper surface of the leaves.