Epithelial tissue is distinguished from connective tissue,muscular,or nervous tissue by its:

Ciliated epithelium is found in:

$A$ group of cells alike in form,function,and origin constitute a/an

Rapid healing of wounds is found in

Which of the following statements are correct regarding the given tissue?
$I -$ Single layer of cuboidal cells.
$II -$ Found in ducts of glands and tubular parts of nephrons in kidneys.
$III -$ Main function is secretion and absorption.
$IV -$ The epithelium of the proximal convoluted tubule $(PCT)$ in the nephron has microvilli.

An example of a merocrine gland is: