2. What are the growth tissues of plants? How are they classified and where can they be found?

The growth tissues of the plants are meristems. Meristems are the tissues that produce plant growth, and are the origin of all other tissues. They are formed of undifferentiated cells with an intense cell division rate. Meristems are classified as primary meristems and secondary meristems.

Primary meristems are found at the apex of the stem, in the lateral buds of the stem, at the base and the tips of shoots and within the root cap. Primary meristems are responsible for the primary growth (lengthening) of the plant.

Secondary meristems make the plant grow in thickness (secondary growth) and are formed by tissues that thicken the stem: cambium and phellogen (cork cambium).