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Biology Past Questions and Answers

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Waec Biology Questions

Question 1246:

Most tropical plants shed their leaves during dry weather conditions in order to

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A Reduce their growth rate.
B Conserve water
C Reduce competition
D Minimize the rate of photosynthesis

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Question 1247:

Which of the following features is not an adaptation of plants to aquatic habitat?

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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

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Question 1248:

The following habitats can be used in the study of succession except

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A Savanna grassland
B Abandoned farmland.
C A pond
D A well cultivated land

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Question 1249:

Population growth rate may be defined as the

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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.

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Question 1250:

In ecological succession, since Iichens grow on bare rock, they are considered to be

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A Primary consumers
B Pioneer organisms
C Climax organisms
D Producers

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