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Biology 2009 WAEC Past Questions

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36

P → Q → R → S → T


he organism designated P in the food chain above is normally sustained by energy from
  • A. sunlight
  • B. carbohydrates
  • C. green plants
  • D. mineral salts.
View Answer & Discuss (2) WAEC 2009
37

P → Q → R → S → T


Which of the following statements best describes the organism designated R? It
  • A. feeds on S
  • B. is a primary consumer
  • C. is a producer as well as a consumer
  • D. is a secondary consumer
View Answer & Discuss WAEC 2009
38
Food chains are relatively short because
  • A. of energy recycling in the ecosystem
  • B. energy gain at each trophic level is high.
  • C. of energy loss at each trophic level
  • D. energy flow in an ecosystem is uni-directional.
View Answer & Discuss WAEC 2009
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39
which of the following organisms does not show colour adaptation to its environment?
  • A. Chameleon
  • B. Earthworm
  • C. Fish
  • D. Toad
View Answer & Discuss (3) WAEC 2009
40
Most tropical plants shed their leaves during dry weather conditions in order to
  • A. reduce their growth rate.
  • B. conserve water
  • C. reduce competition
  • D. minimize the rate of photosynthesis
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