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Structural Organisation in Animals — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYStructural Organisation in Animals3 Marks
Question
What do you understand by special junctions between cells? Which type of special junction are found in epithelial tissues?
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Answer

All cells are held together with intercellular material. These materials form junctions between cells.
There are three types of cell junctions found in epithelial tissue:
  1. Tight Junctions: These junctions help in stopping leakage of substances across a tissue.
  2. Adhering Junctions: These junctions keep neighbouring cells together.
  3. Gap Junctions: These junctions connect cytoplasm of adhering cells, and facilitate exchange of materials.

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