Tissue - GCSE Biology Definition

In biology, tissue refers to a group of similar cells that work together to perform a specific function in a living organism. Each type of tissue has its own role. For example, muscle tissue enables movement, while nervous tissue transmits electrical signals around the body. In animals, there are four main types of tissue: epithelial, connective, muscle, and nervous tissue. In plants, an example of tissue is xylem, which transports water. Tissues combine to form organs, which carry out the complex functions needed for life. Understanding tissues in GCSE Biology helps us learn how organisms are structured and how their bodies work.