WJEC A2 Biology Unit 5 Experimental Task — Worked Answers
WJEC A2 Biology Unit 5 Experimental Task – Worked Answers
Worked answers to the WJEC A2 Biology Unit 5 Experimental Task, covering all six practical tasks. Written by a Chartered Biologist and former WJEC examiner to show precisely how to gain marks in the experimental task.
The WJEC A2 Unit 5 Practical Examination (the Experimental Task) is worth a significant share of the A-level and is sat under exam conditions, yet students rarely get to see a full worked answer to a real task. Marks are lost on the write-up – stating hypotheses, controlling variables, handling data and statistics, and evaluating the method – far more than on the practical itself.
This pack gives complete, worked answers to past WJEC Unit 5 Experimental Tasks, showing exactly how to earn the marks across every section of the write-up: planning, results, analysis (including the statistics), and evaluation.
What’s inside
- Full worked answers to past WJEC A2 Unit 5 Experimental Tasks
- Model responses for every section – hypotheses, variables, method, results, analysis and evaluation
- Worked statistical analysis (the correct test, calculation and conclusion) for each task
- Mark-scheme notes showing where each mark is earned
- Common-error warnings on the write-up points students most often miss
- Instant PDF download – print it or use it on screen
What a full-mark write-up looks like
Analysis section – choosing and justifying the statistical test:
“The data are two independent sets of continuous measurements, so a Student’s t-test is used to compare the means. The null hypothesis is that there is no significant difference between the two means. The calculated t value is compared with the critical value at p = 0.05 and the relevant degrees of freedom; as t exceeds the critical value, the null hypothesis is rejected and the difference is significant.”
Examiner note: marks here need the correct test, a stated null hypothesis, and a conclusion referenced to the critical value – not just a calculated number. The pack shows this reasoning for every task.
How to use it
Work through a past task yourself, then compare each section of your write-up with the model answer. Pay closest attention to the analysis and evaluation sections, where the marks are most often lost. Seeing several complete tasks worked in full builds the write-up technique you can carry into your own Experimental Task.
Who it’s for
WJEC A2 Biology students preparing for the Unit 5 practical examination, and teachers who want worked model write-ups to teach from.