Question

Root hair absorb water from soil due to

• A. Osmotic pressure
• B. Turgor pressure
• C. Suction pressure
• D. Root pressure

Answer 1

The correct option is C Suction pressure

Suction pressure is the decrease in the diffusion pressure of solution over its pure state due to the presence of solute particles in it. The concentration of solute is higher in root hair cells as compared to soil water. So suction pressure builds up and water is drawn towards root hair cells. These water molecules are transported to different parts of the plant. So, the correct answer is 'Suction pressure'.