Anatomy of Flowering PlantsMedium
Question
Anatomically fairly old dicotyledonous root is gistinguished from the dicotyledonous stem by
Options
A. absence of secondary xylem
B.absence of secondary phloem
C.presence of cortex
D.position of protoxylem
Solution
In dicotyledonous root, the condition of xylemis exarch as the protoxylem away from the centre and metaxyem towards the centre. In dicotyledonous stem (eg, Cucurbita), the condition of xylem is endarch as the metaxyem away from the centre and protoxylem towards the centre.
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