Mark the correct option with respect to tissue,location,and its function.

Where is non-keratinized stratified squamous epithelium found?

The secretory ducts of mammary glands are lined by which type of epithelium?

Read the following statements and answer the question.
$(i)$ It is made of a single thin layer of flattened cells with irregular boundaries.
$(ii)$ They are found in the walls of blood vessels and air sacs of lungs.
$(iii)$ They are involved in functions like forming a diffusion boundary.
Which of the following characteristics of tissue is being described by the above statements?

Which protein provides color to the body?

Match column-$I$ (type of epithelium) with column-$II$ (Description) and choose the correct option.

Column-$I$ (Types of epithelium)	Column-$II$ (Description)
$A$. Squamous	$I$. It is composed of a single-layer epithelium of cube-like cells
$B$. Cuboidal epithelium	$II$. Having cilia on their free surface
$C$. Columnar	$III$. It is composed of a single epithelium layer of tall and slender cells
$D$. Ciliated	$IV$. It is made up of a single thin layer of flattened cells with irregular boundaries