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Agricultural Science Past Questions

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2706

Callosobruchus maculates is a common pest of

  • A. maize
  • B. cowpea
  • C. rice
  • D. millet
View Answer & Discuss JAMB 2021
2707

Gummosis disease of citrus is caused by

  • A. aphids
  • B. fungi
  • C. white flies
  • D. bacteria
View Answer & Discuss JAMB 2021
2708

Which of the weeds is dispersed by wind?

  • A. pig weed (Boerhavia diffusa)
  • B. goat weed (Ageratum conizoides)
  • C. Hause thorns (Acanthospermum hispidum)
  • D. Tridax (Tridax procumbeus)
View Answer & Discuss JAMB 2021
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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2709

The characteristic symptoms of mosaic disease of crops is usually observed on

  • A. roots
  • B. leaves
  • C. stems
  • D. fruits
View Answer & Discuss JAMB 2021
2710

The correct sequence in the processes of crop improvement is

  • A. Introduction → selection → breeding
  • B. Breeding → selection → introduction
  • C. Breeding → introduction → selection
  • D. Introduction → breeding → selection
View Answer & Discuss JAMB 2021
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