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NEET 2009
Exam
NEET
Year
2009
Subject
Botany
Chapter
Anatomy of Flowering Plants

NEET 2009 · Botany · Anatomy of Flowering Plants

Anatomically fairly old dicotyledonous root is distinguished from...

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

Options

  1. Aabsence of secondary xylem
  2. Babsence of secondary phloem
  3. Cpresence of cortex
  4. Dposition of protoxylem

Correct answer

D. position of protoxylem

Step-by-step solution

In dicotyledonous root, the condition of xylem is exarch as the protoxylem away from the centre and metaxylem towards the centre. In dicotyledonous stem (eg, Cucurbita), the condition of xylen is endarch as the metaxylem away from the centre and protoxylem towards the centre.
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