Cellulose present in plants and as a food for cattle but not for human beings because?A) Human body does not contain cellulose hence cellulose cannot be broken into D-glucoseB) Human saliva cannot break down plant cellulose in small pieces.C) Bile juice present in cattle helps them to digest cellulose.D) Human beings have a smaller stomach than cattle

The correct answer is A) Human body does not contain cellulose hence cellulose cannot be broken into D-glucose.

Cellulose is a complex carbohydrate found in the cell walls of plants. While it serves as a source of energy for some animals like cattle, humans lack the necessary enzymes (such as cellulase) required to break down cellulose into its constituent glucose molecules. Therefore, humans cannot efficiently digest cellulose, and it passes through the digestive system mostly undigested. This is why cellulose is not considered a food source for humans.