The carbohydrates, often termed as sugar, are the "staff of life" for most organisms. On the basis of mass, they are the most abundant class of bio molecules in nature. Carbohydrates are also known as saccharides since many of those of relatively small molecular weight have a sweet taste and they are widely distributed molecules in both plants and animal tissues, Carbohydrates are also flowing continuously in all steps of ecosystem with flowing of energy. Carbohydrates are also metabolised with flowing in ecosystem. To maintain the essential requirements it is necessary the maintaining a proper ecosystem in interdependencies among plants, animals and surroundings.