Science, asked by pranavkumaresan3, 11 months ago

1. Choose the correct option:
Watering the crops is called:
(a) sowing
(b) manuring
(c) tilling
(d) irrigation
2. Weeds are the:
(a) main crop plants
(b) insects and pests
(c) unwanted plants growing along the crop
(d) chemical substances
3. Combines are used for:
(a) sowing of seeds
(b) harvesting the crops
(c) threshing
(d) harvesting and threshing both.
4. Separating grains from chaff is called:
(a) winnowing
(b) threshing
(c) fallow
(d) harvesting.
5. Weedicides are used to destroy:
(a) insects
(b) weeds
(c) pests
(d) none of these.
6. Kharif crops are sown in
(a) March, April
(b) May, June
(c) October, November
(d) Any time.
7. Wheat and gram belong to
(a) Rabi crops
(b) Kharif crops
(c) Both of these
(d) None of these.
8. Examples of kharif crops are
(a) Wheat and maize
(b) Gram and maize
(c) Paddy and maize
(d) All of these.
9. 2-4D is a
(a) Pesticides
(b) Insecticides
(c) Fungicides
(d) Weedicides.
10. Seed drill is used to
(a) sow the seeds
(b) remove the weeds
(c) remove the pest
(d) mix manure in the soil.

Answers

Answered by riya8491
26

Answer:

  1. irrigation
  2. unwanted plant growing alone crops
  3. harvesting and threshing both
  4. winnowing
  5. weeds
  6. October November
  7. rabi crops
  8. wheat and maize
  9. pesticide
  10. sow the seeds

Answered by juniyaelsalm
2

Answer:

1. The answer is d) irrigation

2. The answer is c) unwanted plants growing along with the crop

3. The answer is d)  harvesting and threshing both.

4. The answer is a) Winnowing

5. The answer is b) Weeds

6. The answer is  b) May, June

7. The answer is a) Rabi crops

8. The answer is  c) Paddy and maize

9. The answer is d) Weedicides

10. The answer is a) sow the seeds

Explanation:

1. Irrigation is the application of controlled amounts of water to land to aid in the production of crops as well as the growth of landscape plants and lawns in agriculture.

2. Weeds are undesired plants that grow alongside crops and take up the nutrients and water that the crops require.

3. A combine, also known as a combine harvester, is a sophisticated farm machine that threshes and chops wheat and other crops.

4. Winnowing is the process of separating quality grains from the chaff, and it is an important step in rice production.

5. Weedicides are chemicals used to kill weeds and are sprayed on fields.

6. Kharif crops are usually planted at the start of the first monsoon rains (May to June), though this varies by area.

7. Rabi crops include wheat and gram. Rabi crops are planted in the early winter.

8. Paddy and maize are examples of Kharif crops.

9. 2-4D is a weedicide, which is used to control the growth of weeds that are growing along with the crops.

10. Nowadays, seeds are sown with the help of a tractor using a seed drill. This gadget evenly sows the seeds at the correct distances and depths.

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