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Biology 2025 WAEC Past Questions

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26

Which of the following statements is not correct about the dental formula of humans?

  • A. One pair of canines is on the upper jaw and three pairs of premolars are on the lower jaw
  • B. Two pairs of incisors are the upper jaw and three pairs of premolars are on the lower jaw
  • C. Two pairs of incisors are on the upper jaw and three pairs of molars are on the lower jaw
  • D. One pair of canines is on the upper jaw and four pairs of molars are on the lower jaw
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27

The relationship between a bean plant and a Tridax plant on a farmland is

  • A. competition
  • B. predation
  • C. parasitism
  • D. epiphytism
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28

The following ecological factors affect all habitat except 

  • A. temperature
  • B. humidity
  • C. light
  • D. pressure
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29

The diagram above is an illustration of an ecological instrument used in a habitat. Study it and answer question below.

The ecological instrument is 

  • A. wind vane
  • B. six's thermometer
  • C. secchi disc
  • D. hygrometer
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30

The diagram above is an illustration of an ecological instrument used in a habitat. Study it and answer question below.

The instrument is used to measure a factor 

  • A. in the atmosphere
  • B. in water
  • C. on land
  • D. on grass
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