What are the functions of the druze crystal?

The function is to protect the Caterpillar while it transforms into a butterfly

The Druse Crystal in a plant cell, kills any harmful bacteria that has invaded by the cell membrane. (a clear rigid molecular covering around the cell that gives it complete control what does in and...

I believe the predominant theory of their purpose is defense. As far as I know, they are predominantly found in plants and would serve to irritate the mouth/throat of any predators.

Most druse crystals found in plants are made of calcium oxalate star-like in shape. They are thought to deter herbivory, and a number of species of plants are poisonous to humans, as well as animals,...

Not sure what your question means.In an IC (Integrated Circuit) the circuit is etched onto a single crystal of Silicon. So the crystal forms the semiconductors within the IC.orQuartz Crystals are...