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2 marksNutrient Cycles and Energy Flow

CAPE Environmental Science Unit 1 · 2014 · Paper 2 · Question 1(a)(ii)

Figure 1 illustrates trophic levels in a terrestrial ecosystem where producers have 30,000 kilocalories of usable energy.

Explain how energy flows through the trophic levels.

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Other parts of this question

  1. 1(a)(i)Calculate the energy available at the primary consumer level.[2 marks]
  2. 1(b)(i)Define 'carrying capacity'.[2 marks]
  3. 1(b)(ii)Explain the importance of carrying capacity in sustaining ecological balance.[4 marks]
  4. 1(c)Explain why phosphorus serves as a limiting growth factor in terrestrial ecosystems.[4 marks]
  5. 1(d)(i)Using the data in Table 1 and an appropriate formula, calculate the estimated population size of deer in Royal Park.[4 marks]
  6. 1(d)(ii)State TWO assumptions underlying the capture-mark-recapture technique.[2 marks]

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