An agricultural scientist is investigating the efficacy of two novel biostimulants designed to enhance the drought tolerance of young olive trees (Olea europaea).
Sixty olive saplings of identical age and genetic clone were selected. The saplings were randomly divided into three groups of twenty:
All three groups were subjected to identical deficit-irrigation schedules (reduced watering) for 10 weeks to simulate drought conditions. At the end of the trial, physiological stress was quantified via leaf relative water content (RWC).
Question: Explain the purpose of Group 3 within this investigation.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 100 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.