Biology 9700/31 May June 2013 | Cambridge AS Level Past Papers With Mark Scheme

1. Identification of glucose, protein, starch, and sucrose in plant extracts using biochemical tests; determination of phloem-origin extract.
2. Quantitative measurement of reducing sugars in plant extracts using standard curve methodology.
3. Plan diagram of vascular bundles with tissue proportion measurements; area ratio calculations for vascular bundle and xylem.
4. Graphical representation of transpiration rates during the day; interpolation of transpiration data.
5. Comparative drawings of adjacent cells in different stem tissues, highlighting structural differences.
6. Observation-based recording of tissue differences between specimens in transverse plant stem sections.