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KVPY Sample Paper KVPY Stream-SX Model Paper-4

  • question_answer
    Secondary xylem and phloem in dicot stem are produced by:

    A) Phellogen                      

    B) Vascular cambium

    C) Apical meristems            

    D) Axillary meristems

    Correct Answer: B

    Solution :

    \[\bullet \]  Vascular cambium is partially secondary
    \[\bullet \] Form secondary xylem towards its inside and secondary phloem towards outsides.
    \[\bullet \] \[4-10\] times more secondary xylem is produce than secondary phloem.


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