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3 marksFood Chains, Food Webs, and Decomposers

CSEC Biology · January 2011 · Paper 2 · Question 3(b)(ii)

One group of organisms not accounted for in the students' data was the decomposers.

Why are decomposers important to organisms in a food web?

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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(c)Identify TWO factors or activities, OTHER THAN feeding, that are necessary for the survival of organisms in an ecosystem.[2 marks]
  4. 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.[3 marks]

More practice: the rest of this paper · more Food Chains, Food Webs, and Decomposers questions · all CSEC Biology past papers