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  4. Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

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Q. Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

Odisha JEEOdisha JEE 2011Anatomy of Flowering Plants

Solution:

In dicot root the protoxylem is located near the periphery of the vascular cylinder, the metaxylem farther inward. In roots xylem is exarch or centripetal. In dicot stem the protoxylem is located near the centre of vascular bundle and metaxylem is located near the periphery i.e. the xylem is endarch or centrifugal.