Question

Match the items in column I with the appropriate ones in column II.

	Column I		Column II
I.	Winnowing	A.	Irrigation
II.	Threshing	B.	Hose
III.	Drip system	C.	Separation of grain from stalks by beating the stalks
IV.	Weeds	D.	Separation of husk from heavy seeds of grains by wind

Select the correct alternative.

• A. I- D, II- C, III- A, IV- B
• B. I- D, II- C, III- B, IV- A
• C. I- C, II- D, III- B, IV- A
• D. I- C, II- D, III- A, IV- B

Answer 1

The correct option is A I- D, II- C, III- A, IV- B

Wind winnowing is an agricultural method used for separating grain from chaff. It is also used to remove pests from stored grain. Threshing is the process of loosening the edible part of cereal grain (or other crop) from the scaly, inedible chaff that surrounds it by some mechanical means, as by beating with a flail or by the action of a threshing machine. It is the step in grain preparation after harvesting and before winnowing, which separates the loosened chaff from the grain. Drip irrigation is sometimes called trickle irrigation and involves dripping water onto the soil at very low rates from a system of small diameter plastic pipes fitted with outlets called emitters or dripper hose. Subsurface drip irrigation, with the help of hose, controlled annual weeds more effectively than sprinkler or furrow irrigation in plots not treated with herbicides.