Here's a breakdown:
* Cell Walls: Horsetail cells have thick cell walls reinforced with silica. This makes them strong and resistant to bending.
* Silica Deposits: The silica is deposited in the form of tiny, sharp particles. This gives horsetails their distinctive rough feel.
Why is silica important?
* Structural Support: The silica provides rigidity, helping the plant stand upright and withstand strong winds.
* Protection: The abrasive texture deters herbivores from eating them.
So, while horsetails might look like a simple plant, they're actually quite sophisticated, utilizing silica to ensure their survival!