These group of cells that perform the same function is called a tissue. Both animal and plant cells can form tissue. An example is bone tissue in animals. A living tissue is composed of a group of cells with a similar structure and function, which all perform together a specific task or job.
Examples of tissues include:
1. Lining of the lungs
2. Lining of the intestines
3. muscle
4. Xylem in plants.
A group of different tissues performing the same task make up an organ.
