The given figures show two types of epithelial tissue (P and Q).

Select the correct option regarding these figures.

Options

A. P and Q are simple squamous epithelial tissue and stratified squamous epithelium respectively.
B. The cells in epithelium Q are arranged in many layers to prevent wear and tear.
C. Epithelium P lines blood vessels and lung alveoli where exchange of substances occurs.
D. Epithelium Q lines kidney tubules and ducts of salivary glands where it provides mechanical support.

Answer

C

Explanation

The figures P and Q show simple squamous epithelium and columnar epithelium respectively. Epithelium P are arranged in many layers in skin to prevent wear and tear. It is present in the alveoli of lungs, blood vessels, heart, etc. The columnar epithelium may possess cilia (hair-like) projections which help to push substances forward. Epithelium Q lines intestine, respiratory tract, Fallopian tubes, etc.