papers, Edexcel A and Edexcel B specimen papers, OCR A and OCR B specimen papers and WJEC specimen papers
and past papers.
‘At least 15% of the marks for an A level biology qualification will require the assessment of practical skills’!
, 7. Use of chromatography to investigate the pigments
isolated from leaves of different plants, eg leaves from
shade-tolerant and shade intolerant plants or leaves of
different colours
,
,