Biology 9700/34 May June 2011 | Cambridge AS Level Past Papers With Mark Scheme

1. Seasonal changes in plant storage compounds, emphasizing sucrose transport and starch conversion in roots.
2. Biochemical testing methods for starch, sucrose, and glucose identification in plant extracts.
3. Effect of sodium chloride concentration on root tissues, including changes in solution volume and osmotic behavior.
4. Comparative analysis of stem and organ structures through plan diagrams and observable differences.
5. Magnification calculations using actual measurements from photomicrographs.
6. Preparation and microscopic examination of xylem vessels, focusing on patterns of lignin thickening.