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Discuss the effects on plant cells when immersed in solutions of different concentrations, using terms such as turgid, turgor pressure, plasmolysis, and flaccid.

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Cambridge IGCSE BiologyMovement into and out of cellsSupplement content

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Discuss the effects on plant cells when immersed in solutions of different concentrations, using terms such as turgid, turgor pressure, plasmolysis, and flaccid

  • This point belongs to Osmosis, especially Osmosis outcomes.
  • You need to be able to discuss the effects on plant cells when immersed in solutions of different concentrations, using terms such as turgid, turgor pressure, plasmolysis, and flaccid.
  • The key ideas to know are Explain.
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Paper 4 structured question: Osmosis

Paper 4Theory (Extended)2 marks

Description

Plant Cells in Sugar Solutions

The student places plant cells in three different sugar solutions: pure water (0% sugar), 5% sugar solution, and 20% sugar solution. After 30 minutes, the student observes the cells under a microscope and notes their condition.

SolutionCell Condition
0% sugarTurgid
5% sugarNormal
20% sugarPlasmolysed
  1. a

    Explain why the plant cells become turgid in pure water.

    Aim for approximately 2 distinct marking points.

    [2]
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