The beard portion of the seed head of a cereal grain plant is  called, collectively, awns. A single awn is the bristle portion of  a seed of grain that extends up at the t â¦ op point of this seed. The  hull protects the endosperm, germ and bran portion of the grain  seed.rain is stored in what is called a Granary (also called Grainery or Grainary, depending on where you live). Grain is also stored in a Grain Elevator, a Silo, or a Grain Bin. 30 people found this useful.