Define meristems ?

Meristems are

Meristems are

Define apical meristem.

Define apical meristem

Are lateral meristems secondary meristems ?

which of the following meristems are referred as primary meristem and helps in primary growth of plant ?(a) intercalary meristem(b) apical meristem(c) lateral meristem

Meristem is :-

What is meristem? Write any two kinds of meristems.