Question

Youngest layer of secondary xylem in wood of dicot stem is located just

• A. Outside the cambium
• B. Inside the cambium
• C. Outside the pith
• D. Inside the cortex

Answer 1

The correct option is B Inside the cambium

In the stems of dicotyledonous trees growing temperate regions, during secondary growth, vascular cambial ring produces secondary phloem towards the outer side and secondary xylem towards inner side. When secondary growth is going on, old secondary xylems pushed towards the centre, and young secondary xylems are present nearer to the vascular cambial ring or just inner to the vascular cambial ring.

So, the correct option is ‘Inside the cambium’.