Agricultural Science Past Questions

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1451

Which of the following species of bacteria lives symbiotically in root nodules of legumes?

A. Azotobacter
B. Clostridium
C. Nitrobacter
D. Rhizobium

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1452

Plant nutrients are restored during the fallow period through

A. reduced soil erosion
B. accumulation of soil organic matter
C. reduced evaporation from the soil
D. accumulation of farmyard manure

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1453

The processes by which animals release carbon dioxide into the air are

A. respiration and decay
B. respiration and ammonification
C. nitrification and decay
D. denitriflcatin and ammonification

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1454

Which of the following practices leads to land degradation in the savanna zones of West Africa? l. Constant annual bushfire ll. Overgrazing of grassland lll. Application of cattle manure. IV. Cutting of woody species for fuel wood

A. l,ll and lll only
B. l, ll and lV only
C. ll, lll, and IV only
D. l, ll, lll and lV

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1455

a 100kg NPK 15: 15: 15 compound fertilizer has a filler make -up weight of

A. 30kg
B. 40kg
C. 45kg
D. 55kg

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Agricultural Science Past Questions

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