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Biology 1990 WAEC Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
41
Which of the following is an autotrophic mode of nutrition?
  • A. Chemosynthesis
  • B. Saprophytism
  • C. Parasitism
  • D. Symbiosis
  • E. Commensalism
View Answer & Discuss WAEC 1990
42

Which of the following is not a way of reducing air pollution?

  • A. Siting factories and power stations away from residential areas
  • B. Building tall factory chimneys
  • C. Passing waste gases through filters and absorbers
  • D. Using lead-free petrol in cars
  • E. Recycling tins, cans and bottles
View Answer & Discuss (9) WAEC 1990
43
Which of the following factors is not associated with aquatic habitat?
  • A. Temperature
  • B. Light intensity
  • C. Turbidity
  • D. Wave action
  • E. Humidity.
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44
Which of the following types of soil has the highest water-retaining capacity?
  • A. Clay
  • B. Laterite
  • C. Loam
  • D. Gravel
  • E. Sand
View Answer & Discuss WAEC 1990
45
Changes in energy flow between organisms in a habitat can be represented by a
  • A. pyramid of biomass
  • B. pyramid of numbers
  • C. pyramid of energy
  • D. food chain
  • E. food web
View Answer & Discuss (2) WAEC 1990
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