Assertion: xylem's cell wall | /r/HasProperty | thick
Facets:
value: very
type: DEGREE
value: due to the deposition of lignin
type: CAUSE
Source sentences:
text: The leftover cell walls are very thick and provide support for the plant; the cavities inside provide a passage through which fluids can move.
text: Sclereids are similar to fibres in that the cell walls are very thick and lignified and the cells are dead at functional maturity.
text: The cell wall is very thick due to the deposition of lignin.