Xen- (prefix): Foreign or other. As in: 1  Xenoantigen -- An antigen that is found in more than one species.  Xenograft -- A surgical graft of tissue from one species to an unlike species, genus or family.
Diet. Snow Geese feed almost exclusively on plant material. During the breeding season, they eat many seeds, leaves, and roots of aquatic vegetation. The very young birds feed on invertebrates. Berries become more important in the fall. In winter, waste grain from agricultural fields has become a primary food source.
Sometimes the hare will eat meat in the winter. In the winter the arctic hare also feeds on bare twigs and vegetables just under the snow. They also feed on grass, bugs, twigs â¦ , and leaves in the summer. In the winter it will also eat spruce twigs, bark, needles, and buds of hard wood.onfidence votes 82. The arctic hare (Lepus arcticus), or polar rabbit, subsists upon crowberries, grasses, mosses, lichens, seaweed, willow twigs, and the bark, leaves, and stems of woody plants.