1. Promeristem: The early dividing tissue originates from the root and apical region of the stem of the plant. It increases root and stem length.
2. Primary meristem: Primary meristem tissue originates in the embryonic stage of the plant. It is eternally divisible. It is located at the tips of roots, stems and branches and increases the length of the plant.
3. Secondary meristem: Secondary meristem tissue originates from permanent tissue. It causes secondary growth of plants.
4. Rib meristem: Rib meristem divides into a single layer. It forms the pith of plants.
5. Plate meristem: Plate meristem is divided into two layers. It forms the scaly bark and leaves.
6. Mass meristem: Mass dividing tissue divides into all layers. It is randomly arranged to form cell islands. It gives rise to embryo, follicle, endosperm, cortex, medulla etc.
7. Apical meristem: The apical meristem is located at the apex of plant roots and stems. It divides and causes the plant to grow in length.
8. Lateral meristem: Lateral meristem tissue is located longitudinally along the sides of the root and stem of the plant. It causes secondary growth. It increases the height or width of the plant.
9. Intercalary meristem: The intercalary meristem lies between two permanent meristems. It forms the root, midrib, apex and flower bud of the plant.
10. Protoderm: Protoderm forms the epidermis and epiderm of plants.
11. Procambium: Procambium forms xylem, phloem and cambium of plants. It forms transport tissue or vascular bundles. In many plants it forms a cycle or pericycle.
12. Ground meristem: The ground meristem gives rise to the cortex, pith and medulla of the plant.