Question 26.
Seed drill is used to
(a) sow the seeds
(b) remove the weeds
(c) remove the pest
(d) mix manure in the soil
Answer: (a) sow the seeds
Question 27.
Which of the following statements is not true for “Organic manure”?
(a) Enhance water holding capacity of soil.
(b) It has a balance of all plant nutrients.
(c) It provides humus to soil.
(d) It improves texture of soil.
Answer: (b) It has a balance of all plant nutrients.
Question 28.
The term used for the process of separation of grains from chaff is
(a) Sieving
(b) Winnowing
(c) Threshing
(d) Hand picking
Answer: (c) Threshing
Question 29.
What is NPK?
(a) Fertiliser
(b) Manure
(c) Weedicide
(d) Weed
Answer: (a) Fertiliser
Question 30.
Separating grains from chaff is called
(a) sowing
(b) threshing
(c) tilling
(d) harvesting
Answer: (b) threshing
Question 31.
Word agriculture has come from two latin words, their meaning is
(a) Cultivation
(b) Crops
(c) Farming
(d) Production
Answer: (a) Cultivation
Question 32.
Wheat and gram belong to
(a) rabi crops
(b) kharif crops
(c) both of these
(d) none of these
Answer: (a) rabi crops
Question 33.
Examples of kharif crops are
(a) wheat and maize
(b) gram and maize
(c) paddy and maize
(d) all of these
Answer: (c) paddy and maize
Question 34.
2,4-D is a
(a) pesticide
(b) insecticide
(c) fungicide
(d) weedicide
Answer: (d) weedicide
Question 35.
Which of the following nutrients replenishes the soil after growing leguminous plants?
(a) Nitrogen
(b) Oxygen
(c) Phosphorus
(d) Potassium
Answer: (a) Nitrogen
Question 36.
Good quality seeds are important for better yield. Choose the incorrect one, about seeds
(a) Solid and free from fungal spores or insects.
(b) For better breed hybrid seeds are selected.
(c) Healthy seeds are separated and dried before sowing.
(d) Seeds placed deep into the soil.
Answer: (d) Seeds placed deep into the soil.
Question 37.
“Farmers adopt many ways to remove weeds and control their growth”. Choose the incorrect one.
(a) Tilling before sowing of crops help the killing of weeds.
(b) Removal of weeds is done before they produce flowers and seeds.
(c) Weeds are also controlled by using certain chemicals.
(d) Weedicides are sprayed during the vegetative growth of weeds after flowering and seed formation.
Answer: (d) Weedicides are sprayed during the vegetative growth of weeds after flowering and seed formation.
Question 38.
The management of rearing of animals for food and other products is known as
(a) granaries
(b) animal husbandry
(c) poultry
(d) warehouse
Answer: (b) animal husbandry
Question 39.
Weeds can be removed by using
(a) pesticides
(b) fungicides
(c) weedicides
(d) bactericides
Answer: (c) weedicides
Question 40.
In which of the statement is or are correct?
(a) Growing different crops in different seasons in the same field will deplete the soil of nutrients.
(b) Chain pump is the traditional method of irrigation.
(c) Leguminous plant can fix nitrogen.
(d) None of the above.
Answer: (b) Chain pump is the traditional method of irrigation.
Question 41.
In which of the statement is or are incorrect?
(a) Living components like microbes’ earthworms etc. helps in growth of crops.
(b) Non-living components support the living component.
(c) Seed drill saves time and labor.
(d) None of the above.
Answer: (d) None of the above.
Question 42.
Who is the father of “Green revolution in India”?
(a) Norman Borlaug
(b) MS Swaminathan
(c) Samuel Slater
(d) Dr. Varghese Kurien
Answer: (b) MS Swaminathan
Question 43. Answer: (b) Conversion of dead decaying matter into ammonia and then into nitrites and nitrates by nitrifying microbes,
What do you mean by “Nitrification”?
(a) Conversion of air nitrogen into nitrites and nitrates by nitrogen microbes,
(b) Conversion of dead decaying matter into ammonia and then into nitrites and nitrates by nitrifying microbes,
(c) Conversion of nitrites and nitrates from decaying organic matter into gaseous nitrogen by denitrifying microbes,
(d) All the above/p>
Answer
Question 44.
What measures must be taken to protect spoilage and insect attack of harvested grains
(a) Exposing them in sunlight for drying.
(b) Fumigation of the storage are to remove its insects.
(c) Tulsi leaves are added to stored grains.
(d) Both (B) and (C).
Answer: (d) Both (B) and (C).
Question 45.
Which of the following statements is or are incorrect?
(a) Freshly harvested grains must be dried before shoring.
(b) Rhizobium present in root nodules of leguminous plants to fix nitrogen.
(c) All crop plants need transplantation.
(d) None of the above.
Answer: (c) All crop plants need transplantation.
Question 46.
Which of the following condition is not essential to grow maize?
(a) High temperature
(b) Humidity
(c) Low temperature
(d) Rainfall
Answer: (c) Low temperature
Question 47.
The soil fertility can be replenished
(a) By repeated growing of crops
(b) By using chemical fertilizers
(c) By practicing crop rotation
(d) All the above
Answer: (c) By practicing crop rotation
Question 48.
The science of rearing, caring, breeding and improvement of domestic animals is known as:
(a) Pisciculture
(b) Apiculture
(c) Manimal Caring
(d) None of the above
Answer: (d) None of the above
Question 49.
The use of manure (which is not correct)
(a) Enhances the water holding capacity of the soil
(b) Improve soil texture
(c) Increases the number of friendly microbes
(d) Also become a source of water pollution
Answer: (d) Also become a source of water pollution
Question 50.
Sometimes, manure is added to the soil before tilling because
(a) Less manure is used
(b) It helps in proper mixing of manure with soil
(c) It saves labor and time
(d) None of the above
Answer: (b) It helps in proper mixing of manure with soil