Core practical 4: Investigate the effect of sucrose concentration on pollen tube growth by Pearson Education Ltd (copyright 2015)

Online text: qualifications.pearson.com/content/dam/pdf/A%20Level/biology-b/2015/teaching-and-learning-materials/AS-and-A-level-Biology-B-Core-Practical-4---Pollen-tube-growth-%28Student%2C-Teacher%2C-Technician-Worksheets%29.pdf

Seven-page teacher, student and technician worksheets in EDEXCEL Biology B Teacher Resource Pack 1, issued by Pearson Education Ltd. The printed copyright is 2015; no separate publication or revision date or personal byline is established. The teacher notes credit adaptation from several protocols including SAPS.

Cited passages: Teacher sheet, printed pp. 1–2 (PDF pp. 1–2), steps 3–8 and answer 1; Technician sheet, printed p. 1 (PDF p. 6), equipment and plant materials. Each sheet restarts its printed pagination.