Final Answer:
Cellulose and starch are examples of d) carbohydrates.
Step-by-step explanation:
Carbohydrates are organic compounds that consist of carbon, hydrogen, and oxygen atoms. They are a crucial source of energy for living organisms. Cellulose and starch are both types of carbohydrates. Cellulose is a complex carbohydrate found in the cell walls of plants, providing structural support. Starch, on the other hand, is a polysaccharide that serves as a storage form of energy in plants.
These carbohydrates play distinct roles in biological systems. Cellulose contributes to the rigidity of plant cell walls, offering support and protection. Starch, meanwhile, serves as a reserve of energy that can be broken down into simpler sugars when needed by the plant.
Understanding the classification of cellulose and starch as carbohydrates is fundamental in the study of biochemistry and nutrition. It highlights their shared chemical composition and functional significance in living organisms.
In summary, cellulose and starch fall under the category of d) carbohydrates, emphasizing their role in providing structural support and serving as an energy reserve in plants.