ANSC Feeds Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Legumes are known for their unique ability to fix nitrogen from the atmosphere through a symbiotic relationship with bacteria in their root nodules. This characteristic is fundamental to their role in crop rotations and soil health. One significant benefit of this nitrogen-fixing ability is that legumes tend to have a higher nutrient density compared to grasses. They typically provide more protein and essential minerals, making them an excellent source of nutrition for both livestock and humans. Their nutrient profile includes higher levels of certain vitamins, minerals, and digestible energy, which supports overall better health and productivity in animals that consume them.

In contrast, the other options do not accurately capture the attributes of legumes. For instance, while legumes may sometimes have lower fiber content than certain grasses, this is not a definitive or widely held characteristic. Moreover, legumes are not primarily used for energy; grasses typically serve this purpose more effectively due to their higher carbohydrate content. Lastly, legumes are known specifically for their nitrogen-fixing ability, which directly contradicts the statement about them lacking this capability. Thus, the assertion that legumes provide higher nutrient density is the correct recognition of their advantages compared to grasses.