8th Class Science Crop Production and Management Question Bank

done Crop Production and Microorganisms Total Questions - 40

• question_answer1)
  Which one of the following is a rabi crop?
  A)
  Millet                 done clear
  B)
  Soyabean done clear
  C)
  Linseed              done clear
  D)
  Paddy done clear
  E)
  None of these done clear
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• question_answer2)
  Cultivator is used for:
  A)
  Irrigation                        done clear
  B)
  Transplantation done clear
  C)
  Sowing seeds      done clear
  D)
  Tilling done clear
  E)
  None of these done clear
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• question_answer3)
  Which one among the following is incorrect about fertilisers?

  (i) A fertiliser is a salt or an organic compound.

  (ii) A fertiliser is obtained by the decomposition of animal wastes and plant residues.

  (iii) A fertiliser provide a lot of humus to the soil.

  (iv) Most of the fertilisers are soluble in water.

  A)
  (i) and (ii)                       done clear
  B)
  (ii) and (iii) done clear
  C)
  (iii) and (iv)                    done clear
  D)
  (i) and (iv) done clear
  E)
  None of these done clear
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• question_answer4)
  Which system of irrigation among the following is most suitable for the uneven land?
  A)
  Dhekli system     done clear
  B)
  Sprinkler system done clear
  C)
  Drip system                    done clear
  D)
  Rahat system done clear
  E)
  None of these done clear
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• question_answer5)
  Winnowing is done with the help of:
  A)
  Water    done clear
  B)
         Wind      done clear
  C)
  Soil                               done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer6)
  Match the following:

  Column A		Column B
  (I)	Sowing	[A]	Butachlor
  (II)	Irrigation	[B]	Sickle
  (III)	Weeding	[C]	Seed drill
  (IV)	Harvesting	[D]	Drip system

  A)
  (I - D), (II - A), (III - C), (IV - B) done clear
  B)
  (I - C), (II - D), (III - B), (IV - A) done clear
  C)
  (I - C), (II - D), (III - A), (IV - B) done clear
  D)
  (I - B), (II - D), (III - A), (IV - C) done clear
  E)
  None of these done clear
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• question_answer7)
  Broadcasting is:
  A)
  Irrigating the field by sprinkler system. done clear
  B)
  Sowing of seeds by hand. done clear
  C)
  Harvesting the Crop. done clear
  D)
  Transferring the seedlings from the nursery. done clear
  E)
  None of these done clear
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• question_answer8)
  Bacteriophage is a:
  A)
  Bacteria             done clear
  B)
  Algae done clear
  C)
  Virus     done clear
  D)
         Protozoa done clear
  E)
  None of these done clear
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• question_answer9)
  Next step after harvesting the crop is:
  A)
  Winnowing                     done clear
  B)
  Threshing done clear
  C)
  Irrigation                        done clear
  D)
  Weeding done clear
  E)
  None of these done clear
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• question_answer10)
  A 'Combine' machine helps in:
  A)
  Harvesting the crop done clear
  B)
  Threshing the crop done clear
  C)
  Winnowing the crop         done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer11)
  Gunny-bag method is used for:
  A)
  Cultivation of crops         done clear
  B)
  Irrigation of crops done clear
  C)
  Harvesting of crops         done clear
  D)
  Storing food grains done clear
  E)
  None of these done clear
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• question_answer12)
  Leguminous crop enriches the soil with:
  A)
  Phosphorus                    done clear
  B)
  Nitrogen   done clear
  C)
  Potassium                      done clear
  D)
  Water done clear
  E)
  None of these done clear
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• question_answer13)
  Fertility of soil can be increased by:
  A)
  Crop rotation      done clear
  B)
  Adding manures done clear
  C)
  Adding Chemical fertilisers done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer14)
  Special festival in India associated with the harvest seasons are:
  A)
  Pongal               done clear
  B)
  Bihu done clear
  C)
  Baishakhi                       done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer15)
  Silos are used for:
  A)
  Harvesting the crops done clear
  B)
  Threshing the corps done clear
  C)
  Storing the grains done clear
  D)
  Irrigation of the crops done clear
  E)
  None of these done clear
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• question_answer16)
  Which leaves are used to protect stored grains from insects and microorganisms?
  A)
  Mango leaves     done clear
  B)
  Peepal leaves done clear
  C)
  Banana leaves    done clear
  D)
  Neem leaves done clear
  E)
  None of these done clear
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• question_answer17)
  Which one of the following is commonly known a 'Malarial Parasite'?
  A)
  Entamoeba                    done clear
  B)
  Paramecium done clear
  C)
  Plasmodium                   done clear
  D)
  Algae done clear
  E)
  None of these done clear
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• question_answer18)
  Which one among the following is a useful microorganism?

  (i) Salmonella typhi

  (ii) Rhizobium

  (iii) Lactobacillus

  (iv) Rhinovirus

  A)
  (i) and (ii)                       done clear
  B)
  (ii) and (in) done clear
  C)
  (iii) and (iv)                    done clear
  D)
  (i) and (iv) done clear
  E)
  None of these done clear
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• question_answer19)
  Fermentation refers to conversion of:
  A)
  Sugar into salt    done clear
  B)
  Sugar into cellulose done clear
  C)
  Sugar into alcohol           done clear
  D)
  Sugar into water done clear
  E)
  None of these done clear
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• question_answer20)
  The process of loosening and turning the soil is called:                
  A)
  Ploughing           done clear
  B)
  Levelling   done clear
  C)
  Manuring                       done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer21)
  Rhizobium fixes nitrogen in the nodules of leguminous plant:       
  A)
  Stem                 done clear
  B)
  Roots      done clear
  C)
  Leaves              done clear
  D)
  Flowers done clear
  E)
  None of these done clear
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• question_answer22)
  In which of the following methods irrigation is done by using rotating nozzles
  A)
  Moat system                  done clear
  B)
  Chain pump done clear
  C)
  Sprinkler system done clear
  D)
         Drip system done clear
  E)
  None of these done clear
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• question_answer23)
  Which among the following is not a common weed?
  A)
  Amaranthus                   done clear
  B)
  Wild oat done clear
  C)
  Chenopodium     done clear
  D)
  Butachlor done clear
  E)
  None of these done clear
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• question_answer24)
  Which of the following crops can be transplanted?
  A)
  Paddy               done clear
  B)
  Tomatoes          done clear
  C)
  Chillies              done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer25)
  Hepatitis B is caused by which one of the following organisms?
  A)
  Viruses  done clear
  B)
  Bacteria    done clear
  C)
  Protozoa                        done clear
  D)
  Algae done clear
  E)
  None of these done clear
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• question_answer26)
  Which one of the following pairs is incorrect?
  A)
  Rust of wheat - fungi       done clear
  B)
  Citrus canker ? bacteria done clear
  C)
  Yellow vein mosaic - Virus         done clear
  D)
  Aspergillosis ? Baqteria done clear
  E)
  None of these done clear
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• question_answer27)
  Which one of the following statements is incorrect?
  A)
  Plasmodium is a protozoa. done clear
  B)
  Female Anopheles carries bacteria as a causative agent of malaria. done clear
  C)
  Female Aedes carries virus as a causative agent of dengue. done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer28)
  Which one of the following groups of microorganisms is considered on the border line of living and non-living things?
  A)
  Viruses  done clear
  B)
  Bacteria    done clear
  C)
  Protozoa                        done clear
  D)
  Algae done clear
  E)
  None of these done clear
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• question_answer29)
  Which one of the following crops does not require nitrogenous fertiliser?
  A)
  Wheat               done clear
  B)
  Millet      done clear
  C)
  Beans    done clear
  D)
  Paddy done clear
  E)
  None of these done clear
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• question_answer30)
  Which one of the following turns alcohol into acetic acid?
  A)
  Penicillium                     done clear
  B)
  Acetobacter done clear
  C)
  Mosquito                       done clear
  D)
  Salmonella typhi done clear
  E)
  None of these done clear
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• question_answer31)
  Which one of the following is caused by bacteria?
  A)
  Measles done clear
  B)
         Polio       done clear
  C)
  Cholera done clear
  D)
  Dengue done clear
  E)
  None of these done clear
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• question_answer32)
  Identify the disease and its causative agent on the basis of given symptoms.

  (i) Small yellow spots formed on upper and lower layer of leaves.

  (ii) Diseased area dies leaving hole.

  (iii) Spots appearing on twigs and fruits

  A)
  Yellow vein mosaic ? Virus done clear
  B)
  Citrus canker ? Bacteria done clear
  C)
  Rust of wheat - Fungus done clear
  D)
  Wilt of tomato ? fungus done clear
  E)
  None of these done clear
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• question_answer33)
  Beans and peas are preferably grown in nitrogen deficient soil because:

  (i) They absorb most of the nitrogen from the soil.

  (ii) They are leguminous plants.

  (iii) They have rhizobium in root nodules which can fix atmospheric nitrogen.

  (iv) They are green plants.

  A)
  (i) and (ii)                       done clear
  B)
  (ii) and (iii) done clear
  C)
  (iii) and (iv)                    done clear
  D)
  (i)and(iv) done clear
  E)
  None of these done clear
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• question_answer34)
  In the production of. _____ Yeast is used.
  A)
  Sugar                done clear
  B)
  Alcohol    done clear
  C)
  Oxygen             done clear
  D)
  Nitrogen done clear
  E)
  None of these done clear
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• question_answer35)
  Bacillus Anthracis was discovered by:
  A)
  Alexander Fleming          done clear
  B)
  Edward Jenner done clear
  C)
  Robert Koch done clear
  D)
  Louis Pasteur done clear
  E)
  None of these done clear
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• question_answer36)
  Which one of the following is not a protozoa?
  A)
  Giardia              done clear
  B)
  Amoeba    done clear
  C)
  Paramecium                   done clear
  D)
  Fucus done clear
  E)
  None of these done clear
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• question_answer37)
  Atmospheric nitrogen can be fixed by:
  A)
  Some fungi        done clear
  B)
  Some protozoa done clear
  C)
  Some blue green algae           done clear
  D)
  Some Virus done clear
  E)
  None of these done clear
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• question_answer38)
  Which one of the following is a preservative used in preservation of fruits as jams and jellies?
  A)
  Mustard oil                     done clear
  B)
  Vinegar done clear
  C)
  Sugar                done clear
  D)
  All the above done clear
  E)
  None of these done clear
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• question_answer39)
  Rhizobium bacteria have _____ with leguminous plants.
  A)
  Free living                      done clear
  B)
  Symbiotic done clear
  C)
  Parasitic            done clear
  D)
  Both [a] and [b] done clear
  E)
  None of these done clear
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• question_answer40)
  Identify the given microorganism?
  A)
  Chlamydomonas done clear
  B)
  Filamentous algae done clear
  C)
  Paramecium                   done clear
  D)
  Giardia done clear
  E)
  None of these done clear
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