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  • Vascular cambium formsOption: 1 Secondary xylemOption: 2 Secondary phloem<div

Vascular cambium forms

Option: 1

Secondary xylem


Option: 2

Secondary phloem


Option: 3

Both a and b


Option: 4

None of these


Answers (1)

best_answer

 

 

Secondary Growth -

  • The growth that occurs along the main axis is called the primary growth. It occurs via the activity of the primary meristem.
  • In most of the monocots and some herbaceous dicots, there is only primary growth.
  • In the majority of angiosperms and gymnosperms, there is an increase in the girth of the stems and roots. Such growth in called the secondary growth. 
  • Secondary growth occurs through the activity of lateral meristem or secondary meristem.
  • Secondary growth occurs in two patterns:
  1. Intrastellar secondary growth: It occurs through vascular cambium. It involves the formation of wood (secondary xylem) and secondary phloem.
  2. Extrastellar secondary  growth: It occurs through the activity of cork cambium. It involves the formation of periderm.
     

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Vascular cambium involves the formation of wood (secondary xylem) and secondary phloem.

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