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5 marksFood Chains, Food Webs, and Decomposers

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

Some ecology students sampled the organisms found on one Poui tree at the edge of a rainforest. Table 3 gives information on these organisms.

From Table 3, identify organisms at EACH trophic level shown in Table 4. Write your answer in the spaces provided in Table 4.

This question uses a figure or table from the paper — you'll see it when you practise.

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Other parts of this question

  1. 3(b)(i)Give TWO examples of decomposers.[2 marks]
  2. 3(b)(ii)Why are decomposers important to organisms in a food web?[3 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