NEET 2024 Zoology Question 192 Solution

Glandular epithelium is classified into two types based on the number of cells: - Unicellular: consisting of isolated glandular cells, like goblet cells of the alimentary canal (A -> III). - Multicellular: consisting of cluster of cells, like salivary glands (C -> I).

Compound epithelium is made of more than one layer (multi-layered) of cells and thus has a limited role in secretion and absorption. Its main function is to provide protection against chemical and mechanical stresses. They cover the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and of pancreatic ducts (B -> IV). Endocrine glands do not have ducts; their products called hormones are secreted directly into the fluid bathing the gland, exemplified by the endocrine islets of the pancreas (D -> II).

A-III, B-IV, C-I, D-II corresponds to Option (1).