Question

Root hairs are .............. layered structure.

• A. One
• B. Two
• C. Three
• D. Four

Answer 1

Answer: (B)

Two

Root hair has thin walls. They are two layered structures. The outer layer is the cell wall and inner layer forms the cell membrane. the outer cell wall is extremely thin like that of cell wall but is semipermeable. As a result of this property, the water molecules can move through but the larger molecules of dissolved salts cannot it is only because of this property that the water gets absorbed from the soil by the roots.