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Why is winnowing done in agriculture?

Answer and explanation

Correct answer: To separate husk from grains

Winnowing is a traditional cleaning method used after threshing. The mixture contains heavier grains and lighter chaff or husk. When it is dropped or tossed in moving air, the heavier grains fall close by, while the lighter husk is carried farther away. This makes it easier to collect cleaner grain without using the actions required for ploughing or sowing.

Option B is correct because winnowing separates grain from lighter husk by using air movement and differences in weight. Option A describes sowing, which means placing seeds in soil. Option C describes tilling, in which soil is loosened or turned with tools or machines. Option D has no agricultural meaning here. Winnowing is therefore a post-harvest grain-cleaning process, although further cleaning or storage may still be needed afterward.

Related tags

WinnowingGrain-CleaningPost-Harvest

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