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AQA · GCSE · Biology · Higher

Strengthening Xylem Tissue

Q04.2 1 mark

Xylem tissue transports water through a plant. The walls of xylem cells contain cellulose.

Name one other substance that strengthens xylem tissue.

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Marking points

  1. 1 Names lignin.

Full-mark answer

Lignin.

Why this answer loses marks

Cellulose.

Cellulose is already supplied and is ignored here; the question asks for the other strengthening substance.

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