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Biology 1991 JAMB Past Questions

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41

Which of the following is likely to occur in a deciduous forest during the dry season?

  • A. New leaves are formed
  • B. The trees die off
  • C. The undergrowth increases
  • D. The ground becomes bare
View Answer & Discuss (20) JAMB 1991
42
Which of these is NOT an adaptive features for arboreal life?
  • A. Possession of long tail
  • B. Possession of claws
  • C. Possession of teeths
  • D. counter shading in coat colour
View Answer & Discuss (7) JAMB 1991
43
Which of the following diseases can be prevented by innoculation?
  • A. Syphilis
  • B. Malaria fever
  • C. Tuberculosis
  • D. Acquired Immune Deficiency Syndrom
View Answer & Discuss (8) JAMB 1991
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44
Sources of air pollutants are
  • A. industrial chimneys, burning fossil oils and river dam
  • B. sulphur dioxide, acid rain and pesticides
  • C. sulphur mines, vehicle exhausts and aerosols
  • D. sewage, smoke and old vehicle
View Answer & Discuss (1) JAMB 1991
45
Fertilizers are lost from the soil through
  • A. sheet erosion and evaporation
  • B. leaching, underground seepages and run-off
  • C. sheet erosion, gully erosion and wind erosion
  • D. wind erosion and heavy rainfall
View Answer & Discuss (7) JAMB 1991
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