Which of the following crops tends to yield seeds with the lowest protein percentage?

Grain sorghum is known for typically having a lower protein percentage in its seeds compared to other common crops. This is primarily due to its genetic makeup and how it stores carbohydrates versus proteins in the seed. Grain sorghum grains consist mainly of starch, contributing to higher carbohydrate content and lower protein levels.

In contrast, crops like soybeans are legumes that are exceptionally high in protein, often being utilized as a protein source in animal feed and human food. Wheat varieties, both hard red and hard white, also tend to have higher protein content, especially since they are used in baking and cooking where protein quality can impact the end products' texture and structure.

Understanding the differences in protein content among these crops is crucial for choosing the right crop based on the intended use, whether it be for human consumption, animal feed, or other agricultural applications.