Plant tissues include xylem, phloem, collenchyma, sclerenchyma, epidermis and meristematic tissue. Animal tissues include epithelial tissue, connective tissue, muscle tissue and nerve tissue.
Plant and animal tissues are used in traditional technology, medical technology and cloning processes. Plant and animal cells have structures related to their functions. A tissue is a group of similar cells from the same origin that together carry out a specific function. Cells which are similar in structure group together to form tissues performing a particular function. Tissues form organs which combine to allow organisms to exist. Sclerenchyma composed of long, narrow and thick cells, which have become dead, forms the least specialized tissue in plants. This tissue forms the walls and boundaries of plant cells and provides strength to tissue plant parts.