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3 marksEcology, Niches, and Interactions

CAPE Environmental Science Unit 1 · 2019 · Paper 2 · Question 1(c)(iii)

Figure 1 illustrates interactions among organisms in a marine ecosystem, and Table 1 lists the number of each organism.

Describe ONE example of commensalism that may occur in a marine ecosystem.

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Other parts of this question

  1. 1(a)(i)Define the term 'fundamental niche'.[2 marks]
  2. 1(a)(ii)Define the term 'realized niche'.[2 marks]
  3. 1(b)Describe TWO ways in which human activities may affect the stages of the water cycle.[4 marks]
  4. 1(c)(i)Use the information in Table 1 to construct a pyramid of numbers in the space provided.[5 marks]
  5. 1(c)(ii)Explain why the pyramid of biomass for a marine ecosystem is inverted.[4 marks]

More practice: the rest of this paper · more Ecology, Niches, and Interactions questions · all CAPE Environmental Science Unit 1 past papers