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Biology 1993 WAEC Past Questions

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21
Which of the following is not a courtship behaviour exhibited of animals?
  • A. Pairing
  • B. Display
  • C. Seasonal migration
  • D. Hibernation
  • E. Territorialism.
View Answer & Discuss WAEC 1993
22
Which of the following mineral salts is a trace element?
  • A. Zinc
  • B. CArbon
  • C. Hydrogen
  • D. Potassium
  • E. Calcium
View Answer & Discuss (4) WAEC 1993
23
Which of the following organisms reduces nitrates in the soil to gaseous nitrogen?
  • A. Euglena
  • B. Protozoan
  • C. Denitrifying bacterium
  • D. Parasitic mould
  • E. Nitrifying bacterium
View Answer & Discuss (1) WAEC 1993
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24
The process whereby microorganisms can convert atmospheric nitrogen into nitrogenous compound is
known as
  • A. nitrogen cycle
  • B. nitrogen fixation
  • C. denitrification
  • D. putrefaction
  • E. decomposition
View Answer & Discuss WAEC 1993
25
What is the function of the part labelled ll?
  • A. Attraction of insects
  • B. Secretion of nectar
  • C. Protection of the stigma
  • D. Formation of fruit wall
  • E. Attachment of flower to the shoot.
View Answer & Discuss WAEC 1993
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