Meristematic comes from the Greek word meristos, which means "divided."
Meristematic tissues are made up of immature, densely packed living cells that divide and grow.
Plant development and growth are controlled by meristematic tissues.
They can be found in plant parts such as root tips, branches, and shoots.
The nucleus is present, but vacuoles are either missing or present in modest amounts.
One of the meristematic tissues found at the base of leaves and internodes is the intercalary meristem.
The intercalary meristem lengthens organs and branches and is also responsible for twins' bending movement. So, Intercalary meristem is a derivation of Primary Meristem since they both contribute to growth.