alleryStart learning →What is the final step of digestion?
AAbsorption of simple sugars
BMastication of the food eaten
CElimination of undigested waste
DSecretion of the gastric juices
Answer & Solution
Correct answer: C. Elimination of undigested waste
1. The sequence runs ingestion, digestion, absorption, then elimination.
2. Elimination is the final step, removing undigested food and waste products.
3. The waste is moved along the colon by peristalsis and stored in the rectum.
4. Expansion of the rectum triggers the neural signal to eliminate.
_Source: OpenStax Biology 1e (CC BY 4.0), Ch 34 "Animal Nutrition and the Digestive System", section Elimination_
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