There are three main types of plant tissue:

1. Meristematic Tissue
2. Permanent Tissue
3. Secretory Tissue

Meristematic Tissue:
Meristematic tissue is the type of tissue that is responsible for the growth of plants. It is found in the tips of roots and shoots, and in the cambium layer of trees. There are two types of meristematic tissue:

- Apical Meristem: This tissue is found in the tips of roots and shoots, and is responsible for the primary growth of the plant.
- Lateral Meristem: This tissue is found in the cambium layer of trees, and is responsible for the secondary growth of the plant.

Permanent Tissue:
Permanent tissue is the type of tissue that is responsible for the functioning of the plant. It is divided into three types:

- Parenchyma: This tissue is found throughout the plant, and is responsible for photosynthesis, storage, and secretion.
- Collenchyma: This tissue is found in the stems and leaves of the plant, and is responsible for providing support to the plant.
- Sclerenchyma: This tissue is found in the stems and roots of the plant, and is responsible for providing mechanical support to the plant.

Secretory Tissue:
Secretory tissue is the type of tissue that is responsible for the secretion of substances such as resin, nectar, and oils. It is divided into two types:

- Glandular Tissue: This tissue is found in the leaves, stems, and flowers of the plant, and is responsible for the secretion of substances such as nectar and oils.
- Laticiferous Tissue: This tissue is found in the stems and leaves of the plant, and is responsible for the secretion of latex.

In conclusion, understanding the different types of plant tissue is important for understanding how plants grow and function. Meristematic tissue is responsible for growth, permanent tissue is responsible for function, and secretory tissue is responsible for secretion.