Question

In the endarch type of primary xylem seen in stems, where is the protoxylem found?

Answer 1

Protoxylem:

1. In the endarch type of primary xylem seen in stems, the protoxylem is formed first and it is present in the centre (pith).
2. Xylem: The vascular tissue of plants called the xylem transports water and dissolved minerals from the roots to the rest of the plant while also offering structural support.
3. The tracheary components, a variety of specialized, water-conducting cells, make up xylem tissue.
4. Protoxylem: Protoxylem is the main xylem tissue that develops in the growing area of roots and shoots before the shoot or root has finished elongating.
5. Further extension is possible because of the lignin's deposit in the secondary walls of these vessels in the form of rings and spirals.
6. Endarch xylem: Protoxylem is directed toward the centre while metaxylem is directed toward the periphery in an endarch configuration.
7. In this exarch arrangement, the xylem develops according to the centripetal pattern.
8. In an endarch configuration, xylem growth follows a centrifugal pattern.