Identify the incorrect statement regarding epithelial tissue.

Select the correct option for the given glandular 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?

The epidermis of the skin is derived from which germinal layer?

In four healthy individuals in their $20$s,if the following cells are damaged or destroyed due to injury,which of these cells are most likely to be replaced by new cells?

Describe various types of epithelial tissues with the help of labelled diagrams.