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Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem byA. absence of secondary xylemB. absence of secondary phloemC. presence of cortexD. position of protoxylem |
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Answer» Correct Answer - d In dicotyledonous root , the condition of xylem is exarch as the protoxylem is away from the centre and metaxylem is towards the centre . In dicotyledonous stem , (e.g .Cucurbita), the condition of xylem is endarch as the metaxylem is away from the centre and protoxylem is towards the centre. |
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