WAEC Agricultural Science questions

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

1. Question 161· Forestry· WAEC

   Planting trees on land that has never been forest is

   • Aafforestation
   • Breforestation
   • Cdeforestation
   • Dagroforestry

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2. Question 162· Forestry· WAEC

   Which of these is an exotic tree species widely planted in Nigeria?

   • Ateak
   • Biroko
   • Cobeche
   • Dmahogany

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3. Question 163· Forestry· WAEC

   Deforestation can lead to

   • Asoil erosion and desertification
   • Bmore rainfall everywhere
   • Chigher soil fertility
   • Dmore wildlife

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4. Question 164· Forestry· WAEC

   Afforestation means

   • Acutting down forests
   • Bplanting trees where there were none before
   • Cburning bush
   • Dgrazing animals

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5. Question 165· Husbandry of field crops· WAEC

   Supplying in crop production means

   • Athinning
   • Breplacing seeds or seedlings that failed to grow
   • Charvesting
   • Dweeding

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6. Question 166· Husbandry of field crops· WAEC

   Yam is usually staked to

   • Aexpose the leaves to sunlight
   • Bprevent rooting
   • Creduce tuber size
   • Dattract pests

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7. Question 167· Husbandry of field crops· WAEC

   A commonly recommended spacing for maize is about

   • A10 cm × 10 cm
   • B2 m × 2 m
   • C75 cm × 25 cm
   • D5 m × 5 m

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8. Question 168· Husbandry of field crops· WAEC

   Oil palm fruits are harvested when

   • Aseveral loose fruits fall from the bunch
   • Bthe leaves turn brown
   • Cthe tree is cut down
   • Dflowers first open

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9. Question 169· Husbandry of field crops· WAEC

   Rice seedlings are usually transplanted from the nursery into

   • Atree trunks
   • Bdry sandy hills
   • Cflooded paddy fields
   • Dgreenhouses only

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10. Question 170· Husbandry of field crops· WAEC

    Cassava is usually ready for harvesting from about

    • A1 month after planting
    • B9 to 12 months after planting
    • C3 weeks after planting
    • D5 years after planting

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11. Question 171· Husbandry of field crops· WAEC

    Mulching helps to

    • Aincrease erosion
    • Bconserve soil moisture and suppress weeds
    • Cattract pests
    • Dreduce yields

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12. Question 172· Husbandry of field crops· WAEC

    Seedlings raised in a nursery before being moved to the field are

    • Asupplied
    • Bthinned
    • Ctransplanted
    • Drogued

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13. Question 173· Husbandry of field crops· WAEC

    Vegetables such as amaranthus (green) are usually harvested

    • Aa few weeks after planting
    • Bafter five years
    • Conly once in a decade
    • Dbefore sowing

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14. Question 174· Husbandry of field crops· WAEC

    Raising seedlings in a nursery before transplanting is common for

    • Ayam
    • Bmaize and sorghum
    • Ccassava
    • Dtomato and pepper

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15. Question 175· Husbandry of field crops· WAEC

    Staggered planting of vegetables helps to

    • Aensure a continuous supply to the market
    • Breduce yield
    • Cincrease pests
    • Dwaste seeds

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16. Question 176· Husbandry of field crops· WAEC

    Yam setts are often treated before planting with

    • Aherbicide
    • Bfertiliser
    • Cwater only
    • Dwood ash or a fungicide to prevent rot

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17. Question 177· Husbandry of field crops· WAEC

    Fermentation of cocoa beans after harvest is done to

    • Akill the tree
    • Bmake them grow
    • Cdevelop flavour and remove the pulp
    • Dadd weight

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18. Question 178· Husbandry of field crops· WAEC

    Maize is ready for harvest when the

    • Aleaves are bright green
    • Bhusks dry and the grains harden
    • Ctassels first appear
    • Dseeds germinate

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19. Question 179· Husbandry of field crops· WAEC

    Which of these can be used as mulch?

    • Aurea
    • Bdry grass
    • Cpesticide
    • Dsand from a river only

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20. Question 180· Husbandry of field crops· WAEC

    Thinning in crop production means

    • Aadding fertiliser
    • Bremoving excess seedlings to give proper spacing
    • Cremoving weeds
    • Dharvesting

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