Trichosclereid
Encyclopedia
Trichosclereids are hard needlelike branched cells
Cell (biology)
The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing, and is often called the building block of life. The Alberts text discusses how the "cellular building blocks" move to shape developing embryos....

 found in some species of plants that serve the purpose of protecting the plant from herbivores. They usually are approximately 6 mm long, but in some species they grow to as long as 1 cm.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK