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Biology 1992 WAEC Past Questions

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26
Which of the following is not an adaptation of plants or animals to desert environment?
  • A. Well developed tap root system
  • B. Small leaves with thick epidermis
  • C. Stems with spike-like leaves
  • D. Metabolic waste in the form of uric acid in some animals
  • E. broad leaves for storage
View Answer & Discuss WAEC 1992
27
A climax community is characterised by
  • A. a stable composition of plant and animal species
  • B. rapid changes in the composition of species
  • C. constant changes in appearance of the habitat
  • D. different species occurring at different times
  • E. gradual change in animal population
View Answer & Discuss WAEC 1992
28
Which of the following is not a characteristic of overcrowding in plant and animal community?
  • A. Population outstripping available space
  • B. Population exceeding available food
  • C. Competition within the population
  • D. increase in primary production
  • E. population increasing at the same rate as the bith rate
View Answer & Discuss (1) WAEC 1992
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29
The use of predators or parasites to control pests in the farm is known as
  • A. predator control
  • B. chemical control
  • C. biological control
  • D. animal control
  • E. parasitic control
View Answer & Discuss (1) WAEC 1992
30
Which of the following substances cannot control the growth of harmful microoganisms?
  • A. Antibiotics
  • B. Hypertonic salt solution
  • C. disinfectants
  • D. isotonic sugar solution
  • E. Antiseptics
View Answer & Discuss WAEC 1992
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