Question

Tessellated epithelium lines the
(a) Trachea
(b) Gonads
(c) Stomach
(d) Coelom

Answer 1

Hint: When the cells turn tessellated in an epithelium, the plasma membrane becomes wavy. Such an epithelium can be seen in regions like the space present between the body wall and the gut wall. Such a space is fluid- filled and is also lined by mesoderm.

Complete answer:
Tessellated epithelium lines the coelom. An epithelium is a tissue composed of one or more than one layer of cells which covers the body surface and forms a lining for the body cavities is called ‘epithelium’. Based on its location and function, the epithelium is classified into the simple and compound epithelium. An epithelium formed by a single layer of cells that functions as a lining for body cavities, ducts, and tubes is called ‘simple epithelium.’ An epithelium consists of two or more cells and has a protective function called ‘compound epithelium.’
Now let's briefly learn about simple and tessellated epithelium.
- Based on structural modifications of cells, the simple epithelium is further classified into three types. They are squamous, cuboidal, and columnar.
- The squamous epithelium is composed of a single, thin layer of flattened cells. In addition to the above features, its cells also have irregular boundaries.
- Its function is to line moist places to protect against wear and tear. It also lines the blood vessels and lymphatic vessels, here it is called the endothelium. It lines the pleura, pericardium, and peritoneum in the form of the mesothelium.
- Sometimes, the cells of the endothelium and mesothelium may become wavy and are termed as ‘tessellated.’ Regions of the body which exhibit this form of simple epithelium are the peritoneum, pleura, linings of blood vessels, lymph vessels, heart, etc.

So, the correct answer is, ‘Coelom.’

Note:
- The whole conducting passageways of the respiratory system namely the trachea, nasal cavity, bronchi, and bronchioles are lined by pseudostratified columnar epithelium.
- Testis and ovaries produce gametes in humans. They are lined by germinal epithelium.
- The lining epithelium of the stomach is entirely made up of mucous columnar cells.