A botanist is conducting an experiment to evaluate the effect of three organic soil amendments on the root mass development of Arabidopsis thaliana seedlings.
A sample of 90 genetically identical seedlings is prepared. The botanist wishes to distribute these 90 seedlings equally among three treatment groups (with 30 seedlings in each group):
Explain one way in which the botanist could randomly allocate the 90 seedlings to the three treatment groups.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 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.
