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4 marksNutrient Cycles and Energy Flow

CAPE Environmental Science Unit 1 · 2018 · Paper 2 · Question 2(a)(i)

Figure 1 illustrates the major zones of a coastal ecosystem, including mangrove forest, lagoon, and reef.

Study Figure 1 and construct a food web for the ecosystem using the organisms shown in Figure 1.

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

The mark scheme is shown once you've answered.

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Other parts of this question

  1. 2(a)(ii)Discuss TWO significant roles of the producers in the constructed food web.[4 marks]
  2. 2(b)(i)Define the term 'ecotone'.[2 marks]
  3. 2(b)(ii)Explain how any THREE abiotic conditions existing in Zone A and its surroundings may influence the biotic components found in this area.[6 marks]
  4. 2(b)(iii)Identify TWO limiting factors present at the reef crest and explain how BOTH factors may affect the population of corals in this area.[4 marks]

More practice: the rest of this paper · more Nutrient Cycles and Energy Flow questions · all CAPE Environmental Science Unit 1 past papers