To solve this problem, we need to match the items in List I with the appropriate descriptions in List II. Let's analyze each item:$\newline\newline \bullet\$A. Unicellular glandular epithelium:$\newline$Unicellular glandular epithelium consists of single cells that function as glands.$\newline$The most common example is the goblet cells found in the alimentary canal, which secrete mucus.$\newline$This matches with III. Goblet cells of alimentary canal.$\newline\newline \bullet\$