Question

In an old stem, the oldest secondary xylem is found just

• A. Inner to vascular cambium
• B. Outside primary xylem
• C. Outside vascular cambium
• D. Inner to phellogen

Answer 1

Answer: (B)

Outside primary xylem

In dicot stem, during secondary growth, when new secondary xylem formation is going on, oldest secondary xylem appear outside the primary xylem.

So, the correct option is 'Outside primary xylem.