Fiber [754]:
Fibers are long cells with thick walls and tapering ends. The cell wall often contain lignin and cellulose. They are dead at maturity and function as support tissue in plant stems and roots. They come from the outer portion of the stem of fibrous plants such as flax, hemp, and jute, or from the leaves of plants such as cattail, agave, and yucca. Fibers can be spun into filaments, thread, or rope; be chemically modified to create a composite material (e.g., rayon or cellophane); or matted into sheets as with paper. .