Cluster of cells that carries out a specific function are called?

A cluster of cells that carries out a specific function is called a tissue. Tissues are groups of similar cells that work together to perform a particular function in the body. There are four main types of tissues in the human body: epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

Epithelial tissue covers and lines the body's surfaces and cavities, and performs functions such as protection, secretion, and absorption. Connective tissue provides support and structure to the body's organs and tissues, and includes types such as bone, cartilage, and blood. Muscle tissue is responsible for movement, and includes skeletal, cardiac, and smooth muscle. Nervous tissue is involved in communication and coordination throughout the body, and includes neurons and glial cells.

Each type of tissue has a specialized structure and function that allows it to perform its specific role in the body.