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Q.
Lignin is the important constituent in the cell wall of
Anatomy of Flowering Plants
Solution:
Lignin is the important constituent in the cell wall of
xylem. Xylem consists of four different types of elementstracheids, vessels, and xylem parenchyma and xylem fibres.
Wall of tracheids are highly thickened by the deposition
of lignin, except at certain points called as pits