# Bamboo,grass and mint stem elongate by the activity of :-

$\begin{array}{1 1}(A)\;\text{Primary meristem}\\(B)\;\text{Secondary meristem}\\(C)\;\text{Intercalary meristem}\\(D)\;\text{Apical meristem}\end{array}$

Bamboo,grass and mint stem elongate by the activity of intercalary meristem
Hence (C) is the correct answer.