Its main function is to provide flexibility to the plants as well as mechanical support. The collenchyma tissue can be located in the leaf stalks, below the epidermis etc. There is very little intercellular space present. The corners of the cell wall are thickened. Collenchyma – These cells are living cells and have an elongated shape.Based on the specific functions, parenchyma can be further classified into Aerenchyma and Chlorenchyma. It mainly acts as a packing tissue, providing mechanical support. The parenchyma tissue is located in the soft parts of the plant such as cortex and pith. They have a large central vacuole and a dense cytoplasm. Parenchyma – The cells of this tissue are living, with thin cell walls.They are parenchyma, collenchyma, and sclerenchyma. Simple permanent tissues are again classified into three main types. Here, all the cells that make up the tissue are similar and have the same structure, with the same type parts. They are made up of only one type of cell. Permanent tissues can be classified into two types. Permanent tissue cells may be living or dead. The permanent tissue in plants mainly helps in providing support, protection as well as in photosynthesis and conduction of water, minerals, and nutrients. The metabolism that occurs in the cells of the permanent tissue is fairly at a lower rate. Large vacuoles are also present inside these cells. You can see intercellular spaces being present in between the cells. The cells are large and a definite shape and size. The permanent tissue cells are also fully differentiated. The cells of the permanent tissue are derived from the meristematic tissue. The cells are also modified to perform specific functions in the plants. In simple words, the permanent tissues in a plant are those tissues that contain nondividing cells.
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