Edexcel IGCSE Biology Analyse Data and Conclusions
Practise Edexcel IGCSE Biology analysing data and drawing evidence-based conclusions by using graph and table results to support biological claims.
- Syllabus
- Issue 3 (2024)
- Course
- Biology 4BI1
Practise Edexcel IGCSE Biology analysing data and drawing evidence-based conclusions by using graph and table results to support biological claims.
Micropropagation is used to produce plant clones.
The process involves growing explants in vitro.
The explants grow new roots and shoots.
A student investigates the effect of pH on the growth of new shoots.
The table shows the student's results.

Explain the relationship between pH and the mean number of shoots per explant.
An explanation that makes reference to two of the following points:
- increases up to pH 6 and decreases above pH 6
- enzymes
- optimum pH is 6 / (enzymes) denature at high / low pH / eq