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ICSE Class 10 Biology Question 5 of 11

Absorption by Roots — The Process Involved — Question 11

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Question 11

Two plant cells are placed in two different liquids and observed after 4-6 hours.

CellLiquidChange in the shape of plant cell
PWaterSwollen
QSugar solutionShrunken

Identify the correct pair of the processes happening in plant cells P and Q.

  1. P - Plasmolysis, Q - Deplasmolysis
  2. P - Plasmolysis, Q - Turgidity
  3. P - Exosmosis, Q - Endosmosis
  4. P - Endosmosis, Q - Exosmosis
Answer

P - Endosmosis, Q - Exosmosis

Reason — Plant cell P is placed in water, so the concentration of water molecules inside the cell is less than the surrounding, hence water molecules enter the cell causing the cell to swell up. Plant cell Q is placed in sugar solution, so the concentration of water molecules inside the cell is more than the surrounding, hence water will move out of the cell and as a result it will shrink.