Question

Vascular cambium cuts cells more actively

• A. Towards centre
• B. Towards periphery
• C. In winter
• D. In roots

Answer 1

The correct option is A Towards centre

Vascular cambium exhibits two patterns of division; multiplicative divisions or additive divisions, thus, cut more actively at centre. Multiplicative divisions increase the number of initial cells and thereby, increasing the circumference of the vascular cambium. In case of additive division, two cells are produced, one serves as initial cell and divide again and the other serve as phloem or xylem mother cell that differentiate into their respective cell types.
Extreme cold conditions inhibit cambium activity which then divides actively in spring and summer season only. Secondary growth is more pronounced in stem as compare to roots.
Thus, the correct answer is option A.