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

22

When a farmer tries to eradicate snails from pastures, he is attempting to control

  • A. ticks
  • B. tapeworms
  • C. trypanosomiasis
  • D. liver flukes
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23

When poultry flock, the birds keep passing out green, foul-smelling faeces with nervous symptoms, it means that the farmer

  • A. has not asministered newcastle disease vaccine
  • B. neglected to treat them againt gumboro disease
  • C. is giving the birds protein-deficient diet
  • D. is feeding a diet high on calcium
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24

Which of the following livestock diseases affects the reproductive system?

  • A. mastitis
  • B. brucellosis
  • C. rinderpest
  • D. anthrax
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25

Which of the following groups of macro-nutrients is a constituent of protein?

  • A. nitrogen,phosphorus and sulphur
  • B. calcium,magnesium and potassium
  • C. magnesium,calcium and phosphorus
  • D. sulphur,magnesium and potassium
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26

A wall is usually constructed in piggeries to

  • A. serve as points for providing drinking water
  • B. make drainage of pens easier
  • C. provide baths for pigs
  • D. reduce piglet's mortality during birth
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27

In which of the following systems of poultry management can the spread of diseases be kept to a minimum?

  • A. battery cage
  • B. deep litter
  • C. fold
  • D. free range
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28

The hormone that influences the movement of the pelvic ligaments during parturition in farm animals is known as

  • A. relaxin
  • B. prolactin
  • C. progesterone
  • D. oestrogen
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29

The gestation period of ewe is

  • A. 90 days
  • B. 115 days
  • C. 131 days
  • D. 149 days
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30

Fluids from the cowpers and prostate gland help in the following except

  • A. clearing the urethra of the trace
  • B. provision of nuritents for spermatozoa survival
  • C. mixing with speermatozoa to form sperm ejaculation
  • D. maintaining the proper functioning of the testes
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31

Ruminants do not normally show deficiency symptoms of vitamin B complex because

  • A. the grasses they consume are very rich in the vitamins
  • B. they do not need the vitamins
  • C. they tolerate the deficiency of these vitamins
  • D. the bacteria in their rumen synthesize the vitamins
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32

Which of the following structures is not connected to the urethra of a bull?

  • A. bladder
  • B. epididymis
  • C. testis
  • D. rectum
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33

Assuming that in sheep, the allele for black coat colour is dominant over that for brown coat colour. Crossing a heterzygote black with a homozygote brown will produce

  • A. 100% brown coat coloured offspring
  • B. 75% brown coat coloured offspring
  • C. 50% brown coat coloured offspring
  • D. 25% brown coat coloured offspring
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34

Assuming that in sheep, the allele for black coat colour is dominant over that for brown coat colour. What percentage of the F generation will have black colour when two heterozygotes are crossed?

  • A. 100%
  • B. 75%
  • C. 50%
  • D. 25%
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35

Biological methods of weed control do not include

  • A. introducing insects to control weeds
  • B. planting crops to compete with the weeds
  • C. planting leguminous cover crops
  • D. uprooting the weeds
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36

The side effects of the various preventive and control measures of pests and diseases of crops include the following except

  • A. improved quality of farm produce
  • B. environmental pollution
  • C. poisoning of wildlife
  • D. disruption of the ecosystem
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37

The eradication of mealy bugs is an effective control of

  • A. corn smut
  • B. swollen shoot of cocoa
  • C. groundnut rosette
  • D. rice blast
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38

Golden brown lesions on peeled yam tuber indicate infection by

  • A. bacteria
  • B. virus
  • C. fungi
  • D. namatode
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39

Deforestation will eventually lead to

  • A. improvement in soil fertility
  • B. improvement of soil texture
  • C. loss of soil organic matter
  • D. increase in soil pH
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40

An erect tropical perennial grass which grows to 3 – 6 metres tall and has broad hairy leaves is the

  • A. elephant grass
  • B. gaint star grass
  • C. spear grass
  • D. gamba grass
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41

Which of the following crops does not require nursery?

  • A. lycopersicon esculentum
  • B. abelmuscus esculentus
  • C. theobroma cacao
  • D. hevea braziliensis
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42

Tomato plants are primarily staked to

  • A. prevent birds from feeding on the fruits
  • B. accelerate fruits maturity
  • C. raise fruits from the ground
  • D. increase crop growth
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