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Biology 2003 WAEC Past Questions

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31
Forest conservation includes the following except
  • A. prevention of bush-fires
  • B. extensive felling of forest trees
  • C. replacing of harvested trees by planting seedlings
  • D. selective exploitation of forest trees
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32
Legumes incorporate nitrogen gas into their proteins because
  • A. of the presence of Azotobacter in their roots
  • B. they possess root nodules containing Rhizobium
  • C. they have a well developed root system
  • D. they are autotrophic
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33

Which of the following is an example of discontinuous variation?

  • A. the range in height of a pea plant from 30cm to 50cm
  • B. Offspring, including the two male cats and three female cats
  • C. the colour of pear plants grown in the dark
  • D. the adult body weight ranging from 50 kg t0 95 kg
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34
Which of following pairs of scientists discovered the Rhesus factor in human blood?
  • A. Hooke and Lavine
  • B. Darwin and Landsteiner
  • C. Landsteiner and Lavine
  • D. Hooke and Darwin
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35
The organic molecule (s) present in the nucleus is/are
  • A. DNA
  • B. Protein, RNA andDNA
  • C. RNA and ATP
  • D. RNA
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