Biology 9700/32 May June 2019 | Cambridge AS Level Past Papers With Mark Scheme

1. Proportional dilution and non-reducing sugar test to estimate sucrose concentration in phloem samples.

2. Investigating the effects of fusicoccin on sucrose loading and mass flow rates in phloem sieve tubes.

3. Using plan diagrams to analyze plant tissue, focusing on vascular bundles and epidermal cells.

4. Calculating the actual length of a vascular bundle from a stained transverse section using magnification.

5. Identifying observable differences between plant organs in micrographs based on tissue features.

6. Evaluating experimental variables and controls to improve confidence in biochemical investigations.