Question

Root is feebly developed, and stem is soft with a large number of air cavities in ______.

Answer 1

Root is feebly developed, and stem is soft with a large number of air cavities in hydrophytes.

Explanation:

This adaptation allows hydrophytes to live in aquatic habitats where water is abundant and supports the plant. The air cavities provide buoyancy and facilitate the exchange of gases in submerged or floating parts. Roots are often poorly developed or absent in such plants because water is readily available for absorption through other plant surfaces.