Biology 9700/32 May June 2020 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigating the effect of sodium chloride concentrations on plasmolysis in onion tissue using proportional dilution and microscopic observations.

2. Observing and recording changes in potato tissue length in various sucrose concentrations, calculating mean percentage changes.

3. Analyzing the relationship between sucrose concentration and water potential in potato cells using calibration curves.

4. Measuring the impact of xylem vessel diameter on water transport speed using colored water and varying paper thickness.

5. Comparing structural differences between leaf transverse sections from photomicrographs and identifying tissue types.

6. Calculating actual vascular bundle diameter using magnification and labeled images.