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Biology WAEC Past Questions

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276
Which of the following reagents is used for the test for starch?
  • A. Million’s reagent
  • B. Fehling’s’ solution
  • C. Sudan III
  • D. Iodine solution
  • E. Benedict’s solution
View Answer & Discuss (1) WAEC 1990
277
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
278

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
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279
Which of the following factors is not associated with aquatic habitat?
  • A. Temperature
  • B. Light intensity
  • C. Turbidity
  • D. Wave action
  • E. Humidity.
View Answer & Discuss WAEC 1990
280
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
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