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Biology 2000 WAEC Past Questions

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46
Which of the following groups consists of heterotrophs?
  • A. Mucor, chlamydomonas and Euglena
  • B. Spirogyra, Mucor and Mushroom
  • C. Man, Mucor and Mushroom
  • D. Man, Maize and Cowpea
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47
Which of the following organisms will not bring about decomposition?
  • A. Earthworm
  • B. Bactenum
  • C. Mould
  • D. Spirogyra
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48
Which of the following is not released during decay of living matter?
  • A. Ammonia
  • B. Oxygen
  • C. Carbon dioxide
  • D. Heat energy
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49
In commensalism
  • A. one of the organisms gains and the other loses
  • B. both organisms benefit from the association
  • C. one of the organisms gains while the other neither gains nor loses
  • D. one of the organisms produces extra cellular Digestive juices.
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50
Parasitism can best be defined as an association between two organisms in which
  • A. both organisms benefit
  • B. one organism gains and the other neither gains nor loses
  • C. both organisms suffer some disadvantages
  • D. one organism gains and the other loses
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