Agricultural Science JAMB, WAEC, NECO AND NABTEB Official Past Questions

2878

Some of the by-products of fish include the following except

  • A. fish meal
  • B. fish silage
  • C. glue
  • D. oil
  • E. leather
View Answer & Discuss WAEC 1989
2879

Minerals such as contained in oyster shell help animals to

  • A. build up their body tissue
  • B. develop their bones and teeth
  • C. have balanced diet
  • D. develop immunity against deficiency diseases
  • E. increas their blood mineral content
View Answer & Discuss WAEC 1989
2880

The exotic breeds of rabbits found in Nigeria include the following except

  • A. new zealand white
  • B. chinchila
  • C. american albino
  • D. flemish gaint
  • E. rhode island red
View Answer & Discuss WAEC 1989
2881

The act of giving birth in rabbits is known as

  • A. kidding
  • B. farrowing
  • C. kindling
  • D. calving
  • E. lambing
View Answer & Discuss WAEC 1989
2882

Which of the following is not a factor of improvement in breeding cattle?

  • A. bloat
  • B. night blindness
  • C. milk fever
  • D. infertility
  • E. anaemia
View Answer & Discuss WAEC 1989
2883

Which of the following is not a factor of improvement in breeding cattle?

  • A. fertility
  • B. butter-fat percentage
  • C. weaning weight
  • D. feed efficiency
  • E. back-fat thickness
View Answer & Discuss WAEC 1989
2884

The best method(s) of regulating fish capture is/are

  • A. gill netting and electro-fishing
  • B. quota and mesh-size control
  • C. beach seine method
  • D. active netting
  • E. passive netting
View Answer & Discuss WAEC 1989
2885

A protozoan diseases of livestock not transmitted by a vector is

  • A. coccidiosis
  • B. babesiosis
  • C. trypanosomiasis
  • D. redwater
  • E. anaplasmosis
View Answer & Discuss WAEC 1989
2886

The symptoms of vitamin deficiency diseases in livestock includes the following

  • A. scurvy
  • B. loss of appetite
  • C. poor blood clotting
  • D. improved fertility
  • E. rickets
View Answer & Discuss WAEC 1989
2887

Which of the following breeds of cattle is regarded as the best dairy breed in Nigeria?

  • A. red bororo
  • B. keteku
  • C. sokoto gudali
  • D. muturu
  • E. white fulani
View Answer & Discuss WAEC 1989
2888

At which of the following ages are gilts normally mated?

  • A. 8 - 12 months
  • B. 14 - 15 months
  • C. 15 - 20 months
  • D. 21 - 24 months
  • E. over 25 months
View Answer & Discuss WAEC 1989
2889

The part of the ruminant stomach from which digestive juices secreted is the

  • A. rumen
  • B. reticulum
  • C. omasum
  • D. paunch
  • E. abomasum
View Answer & Discuss WAEC 1989
2890

Contact insecticides are used to control

  • A. pod borers of legumes
  • B. stem borers of cereal
  • C. leaf beetles of legumes
  • D. peel worm of legumes
  • E. bollworms of cotton
View Answer & Discuss WAEC 1989
2891

Vegetables propagation can be carried out through the following processes except

  • A. seedling
  • B. cutting
  • C. layering
  • D. grafting
  • E. budding
View Answer & Discuss WAEC 1989
2892

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
2893

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
2894

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
2895

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
2896

The process of meiosis in plants ensures the production of reproduction of reproductive cells with

  • A. the same number of chromosomes like the parent plant
  • B. half the number of chromosomes of the parent plant
  • C. no chromosomes like the parent plant
  • D. thrice the number of chromosomes of the parent plant
  • E. twice the number of chromosomes of the parent plant
View Answer & Discuss WAEC 1989
2897

The disease which most attacks groundnut is called

  • A. rosette
  • B. mosaic
  • C. soft rot
  • D. powdery mildew
  • E. brown rot
View Answer & Discuss WAEC 1989
2898

A forest established for watershed management will perform the following functions except

  • A. reducing water pollution
  • B. controlling fish population
  • C. controlling erosion
  • D. maintaining a steady stream flow
  • E. reducing evaporation
View Answer & Discuss WAEC 1989