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1796
The deficiency of calcium in a plant may result in
  • A. stunted growth and poor root development
  • B. poor growth, leaves become orange or brown
  • C. stunted growth, slender stem and yellowing of leaves
  • D. very small leaves and yellowing of leaves
  • E. tall weedy and reddish leaves, `
View Answer & Discuss (1) WAEC 1994
1797
Which of the following is the least safe method of birth control? Using
  • A. spermicide creams
  • B. contraceptive pills
  • C. barriers such as condoms
  • D. intrauterine device
  • E. the withdrawal method
View Answer & Discuss WAEC 1994
1798
Which of the following does not imply attempt at conservation?
  • A. Limit on the size of nets used in fishing
  • B. Limit on the size of vessels to be used in fishing
  • C. Prohibition of hunting or fishing at a certain season
  • D. Prudent management of natural resources
  • E. Retraining from the use of the natural resource
View Answer & Discuss (4) WAEC 1994
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1799
The gradual, cumulative, adaptive and heritable changes in an organism over a long period of time resulting
in emergence of new species is known as
  • A. adaption
  • B. survival
  • C. regeneration
  • D. variation
  • E. organic evolution
View Answer & Discuss WAEC 1994
1800
The structure that produces the energy required by the cell is labelled
  • A. I
  • B. II
  • C. III
  • D. IV
  • E. V
View Answer & Discuss WAEC 1994
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