Identify the diagram and its related function.

The ducts of mammary gland are lined by

In animals,gametes are derived from which type of tissue?

The internal surface of the large intestine is:

The intercellular matrix is negligible or absent in which of the following tissues?

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.