AIIMS 2019 Zoology Epithelial Tissue MCQ Question

Option A, simple cuboidal epithelium, is primarily involved in secretion and absorption, particularly in glands and kidney tubules, where it facilitates the transport of substances like H₂O and ions. This tissue type consists of a single layer of cube-shaped cells that allows for efficient exchange and processing of materials.

In contrast, option B, simple columnar epithelium, is more specialized for absorption and secretion in areas such as the intestines, but its taller cell structure is not as effective for rapid transport as cuboidal cells. Options C and D, stratified cuboidal and stratified columnar epithelium, respectively, are primarily protective in function and are found in areas requiring durability, such as ducts of sweat glands and parts of the male urethra, rather than in roles focused on secretion and absorption.