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

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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

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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

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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

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Vegetables propagation can be carried out through the following processes except

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

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