Answer:
The xylem is located in the root, stem and the leaves of a plant.
The xylem contains dead cells arranged end-to-end forming continuous vessels. They have a hollow central space (lumen)  through which water passes. They walls contain lignin. 
The xylem carries water and minerals, up from the roots to the rest of the plant.
 
        
             
        
        
        
Tissues working together references the pulling and relaxing of tissues which make up the
Muscles
 
        
                    
             
        
        
        
C. data analysis.
I just took a test with this exact question and c was the correct answer
        
                    
             
        
        
        
The answer is its habitat.
        
             
        
        
        
Answer:
The best answer to the question: The Z disc forms the end____ of a sarcomere, would be: the end border, or the point where sarcomeres join, within a muscle fiber.
Explanation:
Concretely, a Z disc is the boundary line that divides sarcomeres within a muscle fiber. They are the bordes between sarcomeres and they contain the most important molecule, actin, which forms the thin filaments essential for muscle tissue movement. This actin molecule, present along the Z discs, under the correct stimulation and circumstances, will bind to myosin and thus movement will be possible.