Final answer:
Paneth cells, found in the small intestine, are characterized by their production of antimicrobial substances that protect the intestinal epithelium from bacteria. Therefore, correct answer is d.
Step-by-step explanation:
Paneth cells are specialized epithelial cells found in the lining of the small intestine, particularly within the crypts of the intestinal glands. Their primary characteristic is the production of antimicrobial substances to maintain gut flora balance and participate in gut immunity.
As part of the body's first line of defense, Paneth cells secrete lysozyme and are capable of phagocytosis, playing an essential role in protecting the intestinal epithelium from harmful bacteria.
When matching the digestive system cell with its correct characteristic, the Paneth cell is correctly matched with d) Produces antimicrobial substances. This distinguishes them from other cells that produce mucus to protect the stomach lining or release enzymes responsible for carbohydrate breakdown.