A tissue is composed of a group of

A tissue is composed of a group of similar cells. These cells have the same structure and function, and they work together to perform a specific task within an organism. Examples of tissues include muscle tissue, which is composed of muscle cells that contract to produce movement, and nerve tissue, which is composed of nerve cells that transmit signals throughout the body. Tissues can combine to form organs, which in turn make up systems that work together to perform complex functions in the body.