BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Gram is not a source of carbohydrate, it is a source of protein.

Detailed explanation-2: -Some foods don’t have a lot of carbohydrates, such as meat, fish, poultry, some types of cheese, nuts, and oils.

Detailed explanation-3: -Potato is not a source of carbohydrate.

Detailed explanation-4: -Which one is not a source of carbohydrate? Explanation: Rice millets and sorghum has carbohydrates in them as a major source of energy. Whereas Gram is a di-cotyledon which is rich in proteins hence gram is the answer.