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Protoxylem is the first formed xylem. If...

Protoxylem is the first formed xylem. If the protoxylem lies next to phloem what kind of arrangement of xylem would you call it ?

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Protoxylem is located after phloem which is produced from primary meristematic tissue. The arrangement of xylem in this condition is called exarch. It is seen in roots.
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