Plants can be genetically modified (GM) to make them tolerant to drought.
Describe an investigation that could be carried out to find out if these drought-tolerant GM plants produce a higher biomass (dry mass) than normal, non-GM plants when grown under water-stressed (dry) conditions.
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.