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Biology 2008 WAEC Past Questions

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36
The speed of the flow of water in a river is faster in the middle than along the banks due to
  • A. differences to turbidity at different parts of the river
  • B. the abundance of fishes and other organisms along the bank
  • C. reduced force of gravity in the middle portion of the river
  • D. resistance offered by the wall of the banks.
View Answer & Discuss (1) WAEC 2008
37
The effects of environmental degradation caused by human activities can be controlled by e following measures except
  • A. reclaiming the land
  • B. converting mining pits into fish ponds
  • C. resettling indigenous inhabitants
  • D. educating people
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38
The following observations concerning succession are true except that the
  • A. pioneer community has fewer species
  • B. middle stages communities are most diverse
  • C. max community has the greatest number of species
  • D. total biomass of the community increases as succession progresses
View Answer & Discuss (3) WAEC 2008
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
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39
A vaccine is introduced into a person‘s body to
  • A. destroy all disease-causing organisms in the body
  • B. stimulate the body to produce antibodies
  • C. enhance the production of red blood cells
  • D. isolate disease-causing pathogens from the blood.
View Answer & Discuss (1) WAEC 2008
40
Which of the following activities constitutes biological control?
  • A. A small bony fish transported on the back of a shark
  • B. Adding manure to crops in a garden
  • C. Tilapia feeding on the larvae and pupae of mosquito
  • D. A vulture feeding on the carcass of a goat
View Answer & Discuss (3) WAEC 2008
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