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CAIE IGCSE Biology 3.2.8 Turgid, Flaccid & Plasmolysed Plant Cells

Practise identifying turgid, flaccid and plasmolysed plant cells from images, then explain each appearance through osmosis, vacuole volume and turgor pressure.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • identify a water-gaining plant cell as turgid because its contents press firmly against the wall
  • identify a water-losing cell as flaccid and recognise plasmolysis when the membrane pulls from the wall
  • explain each appearance using net osmosis, water potential, vacuole volume and turgor pressure

3.2.8—Effects on plant cells of immersing question 1

[Maximum number: 6]

Fig. 1.1 shows the movement of particles through an epithelial cell in the small intestine.

Fig. 1.1

Fig. 1.1

Fig. 1.2 is a photomicrograph of red onion cells.

Fig. 1.2

Fig. 1.2

Fig. 1.3 is a photomicrograph of the same red onion cells after being immersed in a salt solution.

Fig. 1.3

Fig. 1.3

Using Fig． 1.2 and Fig．1．3，describe and explain the difference in appearance of the cells before and after immersion in salt solution．

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