Solution:
Grain seeds are separated from their stalks by threshing.The crop to be harvested contains a stalk which is removed by threshing. The edible part of the crop, i.e. grain seeds, are removed manually by beating the dry stalks. Then these are shaken to remove the dried grains. Threshing can also be done using various machines. Some farmers use animals like bulls to trample over the grains to remove the seeds.
