how these pits in trachieds and vessels are formed of xylem ?
Asked by | 25th Jun, 2008, 08:54: PM
Pits are non-lignified areas of vessels. Due to these pits, water can pass sideways between diferent xylem vessels. The cells of vessels and tracheids are dead. The cell walls of vessels and tracheids get lignified. But in some places, where initially the plasmodesmata was present, no lignin is laid down. These areas form the pits.
Answered by | 25th Jun, 2008, 09:21: PM
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