The diagrams show cross-sections through a root and a stem.
Which labels are correct?
1 )
V:phloem / W:xylem / Y:xylem / Z:phloem
V:phloem / W:xylem / Y:phloem / Z:xylem
3 )
V:xylem / W:phloem / Y:xylem / Z:phloem
4 )
V:xylem / W:phloem / Y:phloem / Z:xylem
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