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Date May 2011 Marks available 1 Reference code 11M.1.HL.TZ1.32
Level Higher level Paper Paper 1 Time zone Time zone 1
Command term Question number 32 Adapted from N/A

Question

The diagram below shows a cross section of a stem. What is the structure labelled Y and one of its functions?

Markscheme

B

Examiners report

Some candidates seemed to confuse the position of xylem and phloem. The role of xylem in support is required in addition to its role in transport (9.2.4 and 9.2.6).

Syllabus sections

Additional higher level » Topic 9: Plant biology » 9.1 Transport in the xylem of plants
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