The term 'Grain Appendages' refers to the arista, which are the short, stiff hairs that grow on the surface of some grains. Arista is a seven-letter word derived from the Greek word for 'EAR, ' and they are found on the ears of wheat, barley, oats, and other cereal grains. Arista are important for protecting the grain from pests and diseases, and they can also be used to identify different varieties of grains.