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Biology Past Questions

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2631
Pond weeds normally lack thick layers of cuticle because
  • A. their system of photosynthesis is not efficient
  • B. there is no danger of becoming desiccated
  • C. their leaves are either dissected or n bon-shaped
  • D. there are numerous stoma a on their upper epidermis
View Answer & Discuss WAEC 2008
2632
Shrubs do not survive on newly weathered soils because
  • A. the top soil is shallow
  • B. drainage on such soil is poor
  • C. humus is absent from the soil
  • D. the soil tends to be sandy
View Answer & Discuss (1) WAEC 2008
2633
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
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2634

The effects of environmental degradation caused by human activities can be controlled by the following measures except

  • A. reclaiming the land
  • B. converting mining pits into fish ponds
  • C. resettling indigenous inhabitants
  • D. educating people
View Answer & Discuss WAEC 2008
2635
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 (5) WAEC 2008
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