Epidermis is specialized for

The goblet cells of the alimentary canal are modified from:

An example of a merocrine gland is:

The ciliated columnar epithelial cells in humans are known to occur in

The inner surface of the stomach, rectum, and large intestine is lined by which type of epithelium?

Which of the following statements about cell junctions is false?
$(i)$ All the cells of the epithelium are held together with little intercellular materials.
$(ii)$ In almost all animal tissues,specialized junctions provide both structural and functional links between individual cells.
$(iii)$ Tight junctions help to stop substances from leaking across a tissue.
$(iv)$ Adhering junctions provide cementing to keep neighbouring cells together.
$(v)$ Gap junctions provide cytoplasmic channels between cells for the passage of ions,small molecules,and sometimes big molecules.