CAIE A Level Biology 9700 · Transport in plants
Describe the distribution of xylem and phloem in transverse sections of a young (primary) herbaceous dicotyledonous plant stem and root. Your description should include the relative positions of these tissues to each other and to the centre of the organ.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.