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Biology 2009 WAEC Past Questions

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41
Which of the following features is not an adaptation of plants to aquatic habitat?
  • A. Breathing roots for entry of air
  • B. Flowers raised above water for the purpose of pollination
  • C. Spongy tissues containing gases for buoyancy
  • D. Hairy structures on the leaves to reduce water loss
View Answer & Discuss (3) WAEC 2009
42
The following habitats can be used in the study of succession except
  • A. savanna grassland
  • B. abandoned farmland.
  • C. a pond
  • D. a well cultivated land
View Answer & Discuss (2) WAEC 2009
43
Population growth rate may be defined as the
  • A. ortality rate per unit area over a period
  • B. number of times an organism occurs within a given period
  • C. number of a particular species per unit area
  • D. net rate of natality and mortality in the habitat over a period.
View Answer & Discuss WAEC 2009
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44
In ecological succession, since Iichens grow on bare rock, they are considered to be
  • A. primary consumers
  • B. pioneer organisms
  • C. climax organisms
  • D. producers
View Answer & Discuss (2) WAEC 2009
45
Which of the following factors will most likely lead to overcrowding within a population?
  • A. Absence of predators
  • B. Emigration
  • C. Food shortage
  • D. Absence of territorial behaviour
View Answer & Discuss (9) WAEC 2009
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