Question

An evidence that the cell wall is permeable, comes from the passage of water and mineral salts from

• A. Soil into root hair
• B. Cortical cells into the pericycle
• C. Root hairs into cortical cells
• D. Pericycle cells to tracheal cells

Answer 1

The correct option is A Soil into root hair

A plant cell is surrounded by a cellulosic cell wall which is dead. Being dead, cell wall cannot regulate the flow of water and solutes across it.

Hence, the cell wall is fully permeable. The function of the cell wall is to provide structural support to the cell. Thus, water and mineral salts are absorbed into root hairs without any hindrance from the cell wall.

So, the correct answer is option A.