Which of the following are the components only of a plant cell?

• Cellulose and starch both are polysaccharide carbohydrates found in plants. 
• A plant cell is characterized by a cellulosic cell wall, which is dead at maturity. Cellulose is made up of glucose molecules. 
• Starch is the storage polysaccharide, i.e. plants store their food in the form of starch. Starch is also made up of glucose.

So, the correct answer is 'Cellulose and starch'