Question

Which of the following agriculture implements is used to separate grain seeds from the chaff?
A. Plough
B. Hoe
C. Sickle
D. Combine

Answer 1

The process of extracting grains from harvested crop plants is known as threshing. The chaff is removed from the grains or seeds. After the crop has been harvested, this procedure is carried out. The stalks are beaten to liberate the grain seeds in this process. Bullocks are sometimes used to assist in the threshing process. Threshing massive amounts of grain is also done with machines.

Complete answer:
Option A: A plough is a farm tool that is used to loosen or turn soil before planting or seeding. Ploughs were once drawn by oxen and horses, but on modern farms, they are now pulled by tractors. A plough has a blade attached to it that cuts and loosens the dirt. Wood, iron, or steel can all be used to make it.
So, option A is incorrect.
Option B: A hoe is a hand instrument used in agriculture and horticulture to shape soil, remove weeds, clear soil, and harvest root crops. Piling earth around the base of plants (hilling), excavating narrow furrows (drills), and making shallow trenches for planting seeds or bulbs are all examples of soil shaping.
So, option B is incorrect.
Option C: A hoe is a hand instrument used in agriculture to shape soil, remove weeds, clear soil, and harvest root crops. Piling earth around the base of plants (hilling), excavating narrow furrows (drills), and making shallow trenches for planting seeds or bulbs are all examples of soil shaping.
So, option C is incorrect.
Option D: The process of separating the seeds from the chaff is known as threshing. After the crops have been harvested, this stage is completed. A machine known as a combine is used for this. The winnowing machine is used by small-scale farmers to thresh their crops.
So, option D is correct.

Hence, Option D is correct.

Note:
Threshing is the process of separating the edible portion of grain (or other crop) from the straw to which it is bonded. It is the next step in the grain preparation process after reaping. The bran would not be stripped from the kernel by threshing. Scratching, scraping, combing, and grinding are the four types of threshing principles accessible. Threshing was frequently done on a separate piece of ground known as a threshing floor.