Question

An old trunk of Shisham (Dalbergia sisso) tree would have the maximum amount of.

• A. Primary phloem
• B. Primary xylem
• C. Secondary xylem
• D. Secondary cortex

Answer 1

The correct option is C Secondary xylem

In dicotyledonous stems, during intra stelar secondary growth, intra fascicular cambium(primary meristem) and inter fascicular cambium(secondary meristem) joins together and form into a ring of cambium is called vascular cambium. It is partly primary meristem and partly secondary meristem. Its activity is continuous and uninterrupted. This vascular cambium produces large amount of secondary xylem towards its innerside and small amount of secondary phloem towards its outerside.

eg:Dalbergia sisso.

So, the correct option is 'Secondary xylem'.