Which statement best describes the relationship between grains and their hulls during processing?

• A. Milling removes the outer hull which contains tough, fibrous material
• B. Milling leaves the hull intact
• C. Milling adds hull material
• D. Milling reduces starch content

Answer: (A)

Grains have an outer protective layer, the hull (often called bran in cereals), which is tough and fibrous. During milling, this outer hull is separated from the starchy inner part (the endosperm) to produce refined flour or white grains. Because that hull is dense and fibrous, removing it is central to how milling changes the grain, giving a finer texture and different cooking properties, while also reducing some of the fiber and minerals found in the whole grain. That’s why the statement that milling removes the outer hull which contains tough, fibrous material is the best description of the relationship. The other ideas don’t match the process: milling does not add hull material, it usually removes rather than leaves the hull intact for refined products, and starch content is not the primary focus of milling.