When some one is hurt or when some one has asma and u need to help them
The top it Perils and the bottom one is Flawed
Your ugly, no offense your weird no offense
Answer:
The cells that make up the xylem are adapted to their function: They lose their end walls so the xylem forms a continuous, hollow tube. They become strengthened by a substance called lignin . Lignin gives strength and support to the plant.
<h2>Hope it helps you.</h2>