Which properties of lignin are important for the function of xylem vessels in the stem of a tall plant, such as a tree?
1) It is inflexible so does not bend easily.
2) It is not permeable to water.
3) It is strong to resist collapse under pressure.
4) It has weaker adhesion to water molecules than cellulose.
1, 2 and 3
2 )
1, 2 and 4
3 )
1, 3 and 4
4 )
2, 3 and 4
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