Question

The cortical cell absorbs water from the root hair cell because ___.

• A. The cortical cell has more O.P. and more DPD than that of the root hair cell.
• B. The cortical cell has less O.P. and more DPD than that of the root hair cell.
• C. The cortical cell has more O.P. and less DPD than that of the root hair cell.
• D. The cortical cell has same values of O.P. and DPD than that of the root hair cell.

Hint:

Water moves toward the cell with higher DPD, which comes from higher osmotic pressure.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept
Water moves from a cell of lower DPD to a cell of higher DPD (greater suction pressure).

Step 2: Apply to the root
For water to move from the root hair to the cortical cell, the cortical cell must have a higher DPD.

Step 3: Role of osmotic pressure
DPD rises with osmotic pressure because \(\text{DPD} = \text{OP} - \text{TP}\).
Cortical cells hold more solutes, so they have higher O.P. and higher DPD than the root hair cell.

Final Answer:
The cortical cell has more O.P. and more DPD than the root hair cell. \[ \boxed{\text{(A) }\text{The cortical cell has more O.P. and more DPD than that of the root hair cell.}} \]