Q. The girth of stem or root increases due to growth of

A
Lateral meristem
B
Apical meristem
C
Intercalary meristem
D
Girth meristem
Solution:

Girth of the stem increases due to lateral meristematic tissues. They are found beneath the bark (called cork cambium) and in vascular bundles of dicot roots and stems (called vascular cambium) as thin layers. This increase in the diameter and girth of the plant is called secondary growth.

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