Question
State two structural differences between xylem and phloem tissue.
Mark scheme (2 marks — 1 mark each, max 2):
- Xylem cells are dead / lignified, phloem cells (sieve tubes) are living (1)
- Xylem has no end walls / continuous tube, phloem has perforated sieve plates (1)
- Phloem has companion cells, xylem does not (1)
- Xylem walls thickened with lignin, phloem walls of cellulose only (1)
2 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.