Which of these is an example of a seed crop?

Field beans are an example of a seed crop because they are specifically cultivated for their seeds, which are harvested for planting in future seasons or for consumption as food products. Seed crops are grown primarily to produce seeds that can be used for further cultivation or as a food source.

In the context of agricultural practices, while wheat, corn, and barley are also significant crops, they can serve multiple purposes, including grain production for consumption or processing. However, field beans have a distinct categorization as a seed crop, explicitly recognized for their role in seed production. The focus on seed quality, germination, and crop management practices is particularly vital for crops like field beans, as these factors directly impact the yield and viability of subsequent plantings.