Biology 9700 · AS & A Level · Structure of transport tissues

Structure of transport tissues — practice question

A student produced the plan diagram of a transverse section through a dicotyledonous plant stem. The section had been treated with a chemical that stains lignin. Which row shows the correct tissues W and Z?

  • AW: phloem, Z: xylem, stained tissue: W
  • BW: phloem, Z: xylem, stained tissue: Z
  • CW: xylem, Z: phloem, stained tissue: W
  • DW: xylem, Z: phloem, stained tissue: Z

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