Choose the correct answer for the followings:1. Watering the crops is called:(a) sowing. (b) manuring(c) tilling (d) irrigation2. Weeds are the:(a) main crop (b) insects(c) unwanted plants (d) chemical substances3. Combines are used for: (a) sowing. (b) harvesting (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. Rearing of fishes is called(a) Pisciculture (b) Apiculture. (c) sericulture. (d) Poultry.10. Seed drill is used to(a) sowing seeds. (b) Weeding.(c) remove the pest. (d) levelling​