JAMB and WAEC Agricultural Science questions

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

1. Question 221· Crop pests and diseases· WAEC

   Insects with piercing and sucking mouthparts include

   • Abeetles
   • Bgrasshoppers
   • Clocusts
   • Daphids

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   Explanation and discussion

2. Question 222· Crop pests and diseases· JAMB

   Black pod disease of cocoa is caused by a

   • Avirus
   • Bfungus
   • Cbacterium
   • Dmite

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   Explanation and discussion

3. Question 223· Crop pests and diseases· WAEC

   Rosette disease of groundnut is spread by

   • Aaphids
   • Bweevils
   • Clocusts
   • Dbeetles

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   Explanation and discussion

4. Question 224· Crop pests and diseases· JAMB

   The insect pest that bores into the stems of maize is the

   • Aaphid
   • Bweevil
   • Cstem borer
   • Dtermite

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   Explanation and discussion

5. Question 225· Crop pests and diseases· WAEC

   The variegated grasshopper damages crops by

   • Aboring stems
   • Bsucking sap
   • Ceating the leaves
   • Drotting roots

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   Explanation and discussion

6. Question 226· Crop pests and diseases· JAMB

   Root-knot nematodes cause

   • Aswellings (galls) on roots
   • Bleaf mosaic
   • Cpod rot
   • Dstem boring

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   Explanation and discussion

7. Question 227· Crop pests and diseases· JAMB

   Integrated pest management combines

   • Aseveral control methods to keep pests below damaging levels
   • Bonly chemical sprays
   • Conly biological control
   • Dno control

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   Explanation and discussion

8. Question 228· Crop pests and diseases· JAMB

   Grains in storage are mostly damaged by

   • Aweevils
   • Btsetse flies
   • Cticks
   • Dmosquitoes

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   Explanation and discussion

9. Question 229· Crop pests and diseases· JAMB

   Copper-based fungicides are sprayed on cocoa farms mainly to control

   • Ablack pod disease
   • Bcapsids
   • Cswollen shoot virus
   • Dweeds

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   Explanation and discussion

10. Question 230· Farm tools and mechanisation· WAEC

    A disadvantage of using tractors on wet clay soils is that they

    • Aimprove drainage
    • Bcompact the soil
    • Cadd nutrients
    • Dcontrol weeds

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    Explanation and discussion

11. Question 231· Farm tools and mechanisation· WAEC

    Which tractor-drawn implement breaks up clods after ploughing?

    • Aridger
    • Bplough
    • Charrow
    • Dplanter

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    Explanation and discussion

12. Question 232· Farm tools and mechanisation· WAEC

    A cutlass is mainly used for

    • Aspraying chemicals
    • Bmeasuring land
    • Cclearing bush and weeds
    • Dmilking cows

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    Explanation and discussion

13. Question 233· Farm tools and mechanisation· JAMB

    A hand trowel is used mainly for

    • Atransplanting seedlings
    • Bfelling trees
    • Cspraying chemicals
    • Dharvesting tubers

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    Explanation and discussion

14. Question 234· Farm tools and mechanisation· WAEC

    A limitation of farm mechanisation in Nigeria is

    • Atrained operators everywhere
    • Blarge areas of farmland
    • Ccheap machines
    • Dsmall, scattered farm holdings

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    Explanation and discussion

15. Question 235· Farm tools and mechanisation· WAEC

    A prismatic compass is used in farm surveying to measure

    • Asoil pH
    • Bheights
    • Cbearings
    • Drainfall

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    Explanation and discussion

16. Question 236· Farm tools and mechanisation· JAMB

    The farm tool commonly used for cutting grass and clearing bush is the

    • Ahoe
    • Bspade
    • Crake
    • Dcutlass

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    Explanation and discussion

17. Question 237· Farm tools and mechanisation· JAMB

    A sprayer is used on the farm to apply

    • Amanure heaps
    • Bseeds
    • Cpesticides and herbicides
    • Dwater to fish ponds

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    Explanation and discussion

18. Question 238· Farm tools and mechanisation· JAMB

    Routine maintenance of farm machines includes

    • Arunning them without oil
    • Bleaving them out in the rain
    • Ccleaning them and oiling or greasing moving parts
    • Doverloading them

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19. Question 239· Farm tools and mechanisation· JAMB

    A planter is an implement used to

    • Athresh grains
    • Bdig ridges only
    • Charvest tubers
    • Dsow seeds at regular spacing

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20. Question 240· Farm tools and mechanisation· WAEC

    A ridger is used on the farm to

    • Amake ridges for planting
    • Bharvest grain
    • Cspray chemicals
    • Dpump water

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    Explanation and discussion