Class 11 NEET Biology Cell - The Unit of Life Questions Part 2

The correct answer is option (2), because tight junctions help to stop substances from leaking across a tissue.
Options (1), (3) and (4) are incorrect because
• Adhering junctions perform cementing to keep neighbouring cells together.
• Gap junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells for rapid transfer of ions, small molecules and sometimes big molecules.