Agricultural Science Past Questions

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Why should a seed-producing farmer spray an insecticide on his crops only when the bees are not around?

A. the bees would sting him and he therefore avoids them
B. the farmer does not want to waste his chemicals
C. bees are important for pollination of his crops
D. bees produce honey for him in his farm
E. bees are harmless insects

View Answer & Discuss WAEC 1989

The average seed rate for maize is 25 kg per hectare. Allowing for a seed wastage of 5 per cent.How many kilogram of seeds would be required in planting 10 hectares of farmland?

A. 237.5
B. 238.0
C. 250.0
D. 255.0
E. 262.5

View Answer & Discuss WAEC 1989

Thrips cause serious mechanical damages to crops by their

A. feeding activities on flowers, leaves and fruits
B. laying eggs on plants
C. sucking of the sap of crops
D. burrowing activities causing damping off in crops
E. activities as vectors of bacterial diseases

View Answer & Discuss WAEC 1989

The expression of a gene in the phenotype irrespective of whether the cell is homozygous or heterozygous is known as

A. recessive
B. partial dominance
C. test-cross
D. segregation
E. dominance

View Answer & Discuss WAEC 1989

Vegetables propagation can be carried out through the following processes except

A. seedling
B. cutting
C. layering
D. grafting
E. budding

View Answer & Discuss (2) WAEC 1989

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Agricultural Science Past Questions

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