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6 marksFood Chains, Food Webs, and Decomposers

CSEC Biology · May/June 2006 · Paper 2 · Question 1(a)

Figure 1 shows an aquatic and a terrestrial food web. Table 1 contains examples of organisms at different trophic levels.

Complete Table 1 using ONLY the organisms shown in the food webs in Figure 1.

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Other parts of this question

  1. 1(b)Identify TWO similarities between the aquatic and terrestrial food webs.[2 marks]
  2. 1(c)Describe how data may be collected to construct the terrestrial food web in Figure 1. Make a list of the materials and apparatus required and state ONE…[7 marks]
  3. 1(d)In the space provided below, construct a table to present the data to be collected for constructing the terrestrial food web.[4 marks]
  4. 1(e)Suggest TWO ways in which the data to be collected may be summarized or represented, apart from food webs.[2 marks]
  5. 1(f)(i)How would the method differ from that described in (c), if you wished to gather data to construct the aquatic food web?[2 marks]
  6. 1(f)(ii)Explain why the method would be different for collecting data for the aquatic food web.[2 marks]
  7. 1(g)(i)Name TWO types of decomposers that are usually found in food webs.[2 marks]
  8. 1(g)(ii)Describe the role decomposers play in the recycling process.[3 marks]

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