Biology 9700/34 Oct Nov 2015 | Cambridge AS Level Past Papers With Mark Scheme

1. Investigation of methylene blue release from plant tissues with varying surface areas, standardization of salt solution volume, and color intensity measurement.

2. Error analysis distinguishing systematic and random errors in measuring plant tissue dimensions, and methylene blue diffusion explanation.

3. Modified procedure to examine temperature effects on methylene blue release, standardization of surface area, and experimental adjustments.

4. Microscopic observation and drawing of starch grains from potato cells, assessment of iodine solution effects on grain features.

5. Analysis of maize starch grain sizes across varieties, anomalous data identification, and chart plotting to illustrate size differences.

6. Calibration of eyepiece graticules, calculation of actual specimen sizes, and detailed root nodule cross-section diagram emphasizing vascular bundles.