WAEC Agricultural Science questions

291 questions with answers and explanations. Tap an option to check yourself.

1. Question 121· Farm tools and mechanisation· WAEC

   A maize crib is designed with

   • Araised floors and slatted sides for ventilation
   • Bno openings
   • Cwalls made of water
   • Da glass roof only

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2. Question 122· Farm tools and mechanisation· WAEC

   A knapsack sprayer is used to

   • Aapply pesticides and herbicides
   • Bharvest grain
   • Cdig holes
   • Dweigh produce

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   Explanation and discussion

3. Question 123· Farm tools and mechanisation· WAEC

   The hoe is used mainly for

   • Afelling trees
   • Bspraying
   • Cweeding and making ridges by hand
   • Dharvesting cassava stems

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4. Question 124· Farm tools and mechanisation· WAEC

   A ridger is used to

   • Acut grass
   • Bmake ridges for planting
   • Cspray crops
   • Dharvest crops

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   Explanation and discussion

5. Question 125· Farm tools and mechanisation· WAEC

   Farm tools should be oiled after use to

   • Asharpen them
   • Bmake them heavier
   • Cprevent rusting
   • Dchange their colour

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   Explanation and discussion

6. Question 126· Farm tools and mechanisation· WAEC

   Ranging poles are used in farm surveying to

   • Aweigh produce
   • Bmeasure rainfall
   • Cmark out straight lines
   • Dtest soil

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7. Question 127· Farm tools and mechanisation· WAEC

   Regular servicing of farm machines helps to

   • Areduce farm output
   • Bincrease fuel consumption
   • Cprolong their life and reduce breakdowns
   • Dcause rusting

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8. Question 128· Farm tools and mechanisation· WAEC

   A silo is used on a farm for

   • Akeeping tools
   • Bhousing poultry
   • Cdrying clothes
   • Dstoring silage or grain in bulk

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9. Question 129· Fisheries and aquaculture· WAEC

   Fertilising a fish pond encourages the growth of

   • Aplankton, which fish feed on
   • Bweeds that kill fish
   • Cbacteria that cause disease
   • Dmosquitoes

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10. Question 130· Fisheries and aquaculture· WAEC

    Fish feed on plankton, which grows well when ponds are

    • Adrained
    • Bfertilised with manure
    • Ccovered
    • Dshaded completely

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11. Question 131· Fisheries and aquaculture· WAEC

    Fisheries is the

    • Agrowing of trees
    • Brearing, catching and management of fish and other aquatic animals
    • Ckeeping of poultry
    • Dmining of salt

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12. Question 132· Fisheries and aquaculture· WAEC

    Pond fish such as tilapia can be given supplementary feed such as

    • Acommon salt
    • Bsand
    • Crice bran
    • Dgravel

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13. Question 133· Fisheries and aquaculture· WAEC

    Fish provide humans mainly with

    • Afat only
    • Bfibre
    • Cstarch
    • Dprotein

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14. Question 134· Fisheries and aquaculture· WAEC

    Fish can be preserved by

    • Asoaking it in water
    • Bsmoking
    • Cleaving it open to flies
    • Dkeeping it warm

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15. Question 135· Fisheries and aquaculture· WAEC

    Tilapia and catfish (Clarias) are commonly reared in

    • Apiggeries
    • Bpoultry houses
    • Cfish ponds
    • Drabbit hutches

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16. Question 136· Fisheries and aquaculture· WAEC

    A fish pond should be stocked at a suitable density to avoid

    • Agood feeding
    • Bhigh yields
    • Cclean water
    • Dovercrowding and poor growth

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17. Question 137· Fisheries and aquaculture· WAEC

    Liming a fish pond is done mainly to

    • Akill all plankton
    • Bfeed the fish
    • Ccorrect the acidity of the pond water and soil
    • Dmake the water cloudy

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18. Question 138· Fisheries and aquaculture· WAEC

    Catching fish by drawing a large net round a shoal is called

    • Aseining
    • Bangling
    • Ctrapping
    • Dspearing

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19. Question 139· Fisheries and aquaculture· WAEC

    Overfishing means

    • Acatching too few fish
    • Bfeeding fish too much
    • Cbuilding too many ponds
    • Dcatching fish faster than they can reproduce

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20. Question 140· Fisheries and aquaculture· WAEC

    Harvesting fish by draining the pond is called

    • Aangling
    • Bcomplete harvesting
    • Ctrolling
    • Dtrawling

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    Explanation and discussion