JAMB Agricultural Science questions

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

1. Question 141· Fisheries and aquaculture· JAMB

   The rearing of fish and other aquatic animals under controlled conditions is

   • Ahorticulture
   • Bapiculture
   • Caquaculture
   • Dsericulture

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   Explanation and discussion

2. Question 142· Fisheries and aquaculture· JAMB

   Fish ponds are limed mainly to

   • Acorrect acidity and improve water quality
   • Bkill all the fish
   • Cfeed the fish directly
   • Dincrease the pond's depth

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3. Question 143· Fisheries and aquaculture· JAMB

   A hatchery in fish farming is used for

   • Asmoking fish
   • Bbreeding fish and raising fry
   • Cselling fish
   • Dstoring nets

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   Explanation and discussion

4. Question 144· Fisheries and aquaculture· JAMB

   Integrated fish farming combines fish culture with

   • Apoultry or pig keeping
   • Bmining
   • Cforestry only
   • Dcanal digging

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5. Question 145· Fisheries and aquaculture· JAMB

   Fingerlings are

   • Afish feed pellets
   • Bfish eggs
   • Cadult breeding fish
   • Dyoung fish a few centimetres long used to stock ponds

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6. Question 146· Fisheries and aquaculture· JAMB

   Fishing with a hook and line is called

   • Atrapping
   • Btrawling
   • Cseining
   • Dangling

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7. Question 147· Fisheries and aquaculture· JAMB

   Tilapia is widely raised in fish ponds because it

   • Anever breeds in ponds
   • Blives only in sea water
   • Cneeds no feeding
   • Dgrows fast and tolerates a wide range of conditions

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8. Question 148· Fisheries and aquaculture· JAMB

   Overfishing leads to

   • Alarger fish
   • Bmore fish
   • Ccleaner water
   • Ddepletion of fish stocks

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9. Question 149· Fisheries and aquaculture· JAMB

   Fish breathe in water using their

   • Askin only
   • Blungs
   • Cgills
   • Dfins

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10. Question 150· Fisheries and aquaculture· JAMB

    Young fish just hatched from eggs are called

    • Afingerlings
    • Bfry
    • Cspawn
    • Dadults

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    Explanation and discussion

11. Question 151· Fisheries and aquaculture· JAMB

    Which of these is a method of preserving fish?

    • ASmoking
    • BScaling
    • CGutting
    • DFilleting

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    Explanation and discussion

12. Question 152· Fisheries and aquaculture· JAMB

    Lime is applied to fish ponds to

    • Acorrect acidity and improve productivity
    • Bkill all fish
    • Cadd colour
    • Dstop plankton

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    Explanation and discussion

13. Question 153· Fisheries and aquaculture· JAMB

    Tilapia and Clarias are popular in Nigerian fish farming because they

    • Alive only in rivers
    • Bare marine fish
    • Cneed no feed
    • Dgrow fast and tolerate pond conditions

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14. Question 154· Forestry· JAMB

    Quinine, used against malaria, was obtained from the bark of the

    • Ateak tree
    • Brubber tree
    • Ccinchona tree
    • Doil palm

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15. Question 155· Forestry· JAMB

    A major cause of deforestation in Nigeria is

    • Aafforestation
    • Bindiscriminate felling of trees for firewood and timber
    • Ccreating forest reserves
    • Dthe taungya system

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16. Question 156· Forestry· JAMB

    Forest reserves help to

    • Aencourage illegal logging
    • Bincrease desertification
    • Cconserve wildlife and prevent soil erosion
    • Dreduce rainfall

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    Explanation and discussion

17. Question 157· Forestry· JAMB

    Forest regulations in Nigeria may require a permit before

    • Aplanting a garden
    • Bfelling timber in a forest reserve
    • Cfishing in a pond
    • Dkeeping goats

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18. Question 158· Forestry· JAMB

    Deforestation leads to

    • Amore rainfall always
    • Bsoil erosion and loss of biodiversity
    • Cbetter soil
    • Dcooler climate

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19. Question 159· Forestry· JAMB

    Which of the following forest products is used in making paper?

    • APulpwood
    • BShea butter
    • CKola nuts
    • DGum arabic

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20. Question 160· Forestry· JAMB

    Shelterbelts of trees in northern Nigeria help to

    • Araise temperature
    • Bincrease flooding
    • Creduce wind speed and check desert encroachment
    • Dattract locusts

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    Explanation and discussion