Explain plasmodesmata.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Plasmodesmata (singular: plasmodesma) are microscopic protoplasmic connections that traverse the cell walls of adjacent plant cells. These channels facilitate intercellular communication and transport by creating a continuous cytoplasmic network called the symplast. Plasmodesmata allow the passage of:
- Water
- Ions
- Small molecules
- Regulatory proteins and RNA
Structure: Each plasmodesma is lined by the plasma membrane and contains a central strand of endoplasmic reticulum called the desmotubule.
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