Plants can be genetically modified (GM) to make them tolerant to high soil salinity (salt stress).
Describe an investigation that could be carried out to find out if these salt-tolerant GM plants produce a higher dry biomass than normal, non-GM plants when grown in soils with high salt concentrations.
Your answer should include experimental details and be written in full sentences.
30 exam-style questions on Edexcel IGCSE Biology Genetic modification (genetic engineering). Each one has a worked solution and a mark scheme showing where the marks go.