Carbohydrates, a major source of energy, are stored in plants and animals in different forms. Option 1 states that plants store carbohydrates as cellulose while animals store them as glucose. This is incorrect. Cellulose is a complex carbohydrate found in the cell walls of plants and provides structural support, not energy storage. Glucose, on the other hand, is a simple sugar and serves as an immediate source of energy in both plants and animals.

Option 2 correctly states that plants store carbohydrates as starch and animals store them as glycogen. Starch is a polysaccharide, found in plants, that serves as a storage form of glucose. It can be broken down into glucose when energy is needed. Glycogen, a similar polysaccharide, is found in animals and serves the same purpose of storing glucose for energy.

Option 3 incorrectly states that plants store carbohydrates as starch and animals store them as glucose. While plants do store carbohydrates as starch, animals store them as glycogen, not glucose. Glucose is produced by breaking down starch or glycogen when energy is required.

Option 4 incorrectly states that plants store carbohydrates as cellulose and animals store them as glycogen. As previously mentioned, cellulose is not a form of energy storage but