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Absorption by roots - The Processes Involved — Biology STD 10 — Question

ICSE BoardEnglish MediumSTD 10BiologyAbsorption by roots - The Processes Involved1 Mark
MCQ
Water will be absorbed by the root hairs when :
  • ✓
    Concentration of solutes in the cell sap is high
  • B
    Concentration of solutes in the soil is high
  • C
    The plant is rapidly respiring
  • D
    None of the above
✓

Answer

Correct option: A.
Concentration of solutes in the cell sap is high
(a) Concentration of solutes in the cell sap is high
Explanation:
Water moves from areas of low solute concentration (soil) to high solute concentration (cell sap) by osmosis. When the cell sap in root hairs has a higher concentration of solutes, water from the soil will naturally be absorbed into the cells.

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