In dicots and gymnosperms,secondary growth is caused by:

  • A
    Formation of medullary rays
  • B
    Fusion of tracheary elements
  • C
    Formation of meristematic cells in the vascular region
  • D
    Development of meristematic tissues in both vascular and cortical regions

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Similar Questions

What is/are true about heartwood?
$I.$ It does not help in water conduction.
$II.$ It is also called alburnum.
$III.$ It is dark in colour but very soft.
$IV.$ It has tracheary elements,which are filled with tannin,resin,etc.

Describe the vascular cambium responsible for secondary growth in detail.

Complementary cells are formed by the activity of ..........

Wood is $.....................$

Which of the following is not formed from the procambium?

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