Structural Organisation in Animals class 11 Neet What is Tissue ? Tissue refers to a group or collection of similar cells that work together to perform a specific function in the body. Different types of tissues, such as epithelial, connective, muscle, and nervous tissue, make up the organs and structures of living organisms. They are the building blocks of organs and help in carrying out various physiological processes. Animal Tissue ? Animal tissue refers to the collection of specialized cells that make up the different structures and organs in animals. Animal tissues can be broadly classified into four main types: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. 1. Epithelial tissue: This tissue covers the surfaces of the body, lines the cavities and tubes within the body, and forms the outer layer of organs. It serves as a protective barrier and can also be involved in secretion and absorption. 2. Connective tissue: Connective tissue provides support, stru
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