Per NCERT, which meristem is responsible for increase in the GIRTH (diameter) of a tree trunk — through actively dividing cells arranged in a ring in the stem?
ALateral meristem
BIntercalary meristem
CApical meristem
DSclerenchyma
Answer & Solution
Correct answer: A. Lateral meristem
Per NCERT §3.2.2, lateral meristem produces new cells inwards and outwards, increasing girth. Apical is for length; intercalary for regrowth; sclerenchyma is permanent.
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