Question

In which among the following cases, the rate of absorption by roots will be the highest?

• A. Thin cell wall and less surface area
• B. Thin cell wall and more surface area
• C. Thick cell wall and less surface area
• D. Thick cell wall and more surface area

Answer 1

The correct option is B Thin cell wall and more surface area

There are millions of tiny hair like structures on the tip of the root called root hairs. They help in faster absorbtion of water and mineral from the soil by diffusion. Root hairs are thin walled, slender extension of epidermal cell that increases the surface area of absorption. More the surface area faster will be the rate of absorption of water.