Question

In root hair, water enters due to

• A. Diffusion
• B. W.P.
• C. T.P.
• D. O.P.

Answer 1

The correct option is D O.P.

(A) Diffusion is the movement of the water molecule from higher concentration to lower concentration.

(B) Wall pressure is the pressure applied by the cell wall against the turgor pressure.

(C) Turgor pressure is pressure applied against the wall pressure.

(D) Osmotic pressure is the pressure applied to prevent osmosis that is the movement of the water molecule from a lower solute concentration to a higher concentration through a semi-permeable membrane. Absorption of water through roots is by osmotic pressure.

So, the correct answer is 'Osmotic pressure'.