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3 marksPopulation Growth and Survival Factors

CSEC Biology · January 2011 · Paper 2 · Question 3(d)

The size of a population of organisms may change from time to time. Name THREE physical factors that affect the size of populations in an ecosystem.

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Other parts of this question

  1. 3(a)From Table 3, identify organisms at EACH trophic level shown in Table 4. Write your answer in the spaces provided in Table 4.[5 marks]
  2. 3(b)(i)Give TWO examples of decomposers.[2 marks]
  3. 3(b)(ii)Why are decomposers important to organisms in a food web?[3 marks]
  4. 3(c)Identify TWO factors or activities, OTHER THAN feeding, that are necessary for the survival of organisms in an ecosystem.[2 marks]

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