Science

Epithelial tissue

In Class 9 Science, the topic Epithelial Tissue in the chapter “Tissues in Action” explains how closely packed cells form protective coverings and inner linings in the body. Students learn about types such as squamous, cuboidal, columnar, ciliated and glandular epithelium, along with their structures, locations and functions. The topic connects cell shape and arrangement with roles including protection, absorption, secretion and movement of substances, helping learners understand how tissues support body organisation.