Q17 of 56 Page 21

What is the role of roughages in the alimentary tract? (AS1)

Roughages play an important role in the alimentary tract. These include


a) It prevents the accumulation of toxic substances in the rectum.


b) It helps in the peristaltic movements that allows the passage of food from stomach to intestine to rectum.


c) It has a characteristic water holding capacity.


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