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Biology 1991 WAEC Past Questions

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46

The practice of warming soup regularly as it concerns food preservation is essentially to

  • A. retain the taste
  • B. help to break down cellulose
  • C. remove excess water
  • D. kill the bacteria in it
  • E. raise the temperature
View Answer & Discuss (4) WAEC 1991
47
Agglutination occurs in blood transfusion when the
  • A. donor and the recipient belong to the same blood group
  • B. same antibodies from donor and recipient fuse together
  • C. donor and the recipient belong to different race
  • D. recipient is not a universal recipient
  • E. antigens and anitbody in the donor and the recipient react
View Answer & Discuss (1) WAEC 1991
48
Which of the following is not a way of conserving natural resources?
  • A. controlling farming practice
  • B. Establishing forest reserve
  • C. Establishing of parks and gardens
  • D. Encouraging poaching in game reserve
  • E. protecting endangered species
View Answer & Discuss (2) WAEC 1991
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49
Which of the following limiting resources is competed for by organism in the desert?
  • A. Light
  • B. Temperature
  • C. Oxygen
  • D. water
  • E. Carbondioxide
View Answer & Discuss WAEC 1991
50
The adaptation for water conservation in organisms include the following except
  • A. scales in fishes
  • B. scales on leaves
  • C. thick leaves
  • D. spine in plants
  • E. succulent stem
View Answer & Discuss (9) WAEC 1991
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