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Nutrient Cycles and Energy Flow · CAPE Environmental Science Unit 1

54 past-paper questions on Nutrient Cycles and Energy Flow, part of Fundamental Ecological Principles, from every CAPE Environmental Science Unit 1 paper on Quelpr.

Practise Nutrient Cycles and Energy Flow
  1. 1(a)1 mark· CAPE Environmental Science Unit 1 · 2004 · Paper 1Identify a secondary consumer from Figure 1.
  2. 1(b)3 marks· CAPE Environmental Science Unit 1 · 2004 · Paper 1State three possible impacts on the ecosystem if the population of water beetles died out.
  3. 1(c)2 marks· CAPE Environmental Science Unit 1 · 2004 · Paper 1State the importance of green algae in the mangrove ecosystem.
  4. 1(d)(i)1 mark· CAPE Environmental Science Unit 1 · 2004 · Paper 1Identify which organism(s) has the least biomass.
  5. 1(d)(ii)2 marks· CAPE Environmental Science Unit 1 · 2004 · Paper 1Explain why the organism(s) identified in (d)(i) have the least biomass.
  6. 2(c)6 marks· CAPE Environmental Science Unit 1 · 2004 · Paper 2Describe two ways in which human activities have affected the nitrogen cycle.
  7. 3(a)4 marks· CAPE Environmental Science Unit 1 · 2004 · Paper 2Give four reasons why, in an ecosystem, a food web is generally more useful than a food chain.
  8. 3(b)8 marks· CAPE Environmental Science Unit 1 · 2004 · Paper 2Outline four reasons for assigning trophic levels to each organism in an ecosystem.
  9. 3(c)8 marks· CAPE Environmental Science Unit 1 · 2004 · Paper 2With reference to Figure 2, explain why it is more energy efficient for humans to eat at lower trophic levels.
  10. 1(a)4 marks· CAPE Environmental Science Unit 1 · 2005 · Paper 2Using an example of EACH, distinguish between 'carbon sinks' and 'carbon sources'.
  11. 1(b)(i)5 marks· CAPE Environmental Science Unit 1 · 2005 · Paper 2With the use of an annotated diagram, outline the movement of carbon between the atmosphere and the biotic components of the terrestrial ecosystem.
  12. 1(b)(ii)6 marks· CAPE Environmental Science Unit 1 · 2005 · Paper 2With the use of an annotated diagram, outline the phosphorous cycle.
  13. 1(c)(i)1 mark· CAPE Environmental Science Unit 1 · 2005 · Paper 2Identify the MAJOR difference between the carbon cycle and the phosphorous cycle.
  14. 1(c)(ii)4 marks· CAPE Environmental Science Unit 1 · 2005 · Paper 2Outline the MAJOR consequence of the difference between both cycles indicated in (c)(i).
  15. 2(a)5 marks· CAPE Environmental Science Unit 1 · 2005 · Paper 2Group the organisms shown in the food web in their respective trophic levels.
  16. 2(b)5 marks· CAPE Environmental Science Unit 1 · 2005 · Paper 2Explain how energy becomes incorporated in this ecosystem.
  17. 2(c)4 marks· CAPE Environmental Science Unit 1 · 2005 · Paper 2Only a small percentage of energy incorporated into the ecosystem is available to the barracuda. Suggest TWO reasons for this.
  18. 1(a)(i)1 mark· CAPE Environmental Science Unit 1 · 2006 · Paper 1Identify Process A.
  19. 1(a)(ii)1 mark· CAPE Environmental Science Unit 1 · 2006 · Paper 1Identify Process C.
  20. 1(b)1 mark· CAPE Environmental Science Unit 1 · 2006 · Paper 1State the source of energy driving the water cycle.
  21. 1(c)6 marks· CAPE Environmental Science Unit 1 · 2006 · Paper 1Outline each of the processes identified in (a), indicating how the source identified in (b) drives each process.
  22. 6(b)6 marks· CAPE Environmental Science Unit 1 · 2006 · Paper 1Outline two ways in which urban populations impact on biogeochemical cycles.
  23. 2(a)3 marks· CAPE Environmental Science Unit 1 · 2006 · Paper 2Identify the categories of organisms at EACH level shown in Figure 1.
  24. 2(b)5 marks· CAPE Environmental Science Unit 1 · 2006 · Paper 2Account for the shape of the diagram in Figure 1.
  25. 2(c)3 marks· CAPE Environmental Science Unit 1 · 2006 · Paper 2Draw a diagram showing the pyramid of numbers for the mango tree.
  26. 2(d)9 marks· CAPE Environmental Science Unit 1 · 2006 · Paper 2Account for any difference between the shape of the pyramid of energy shown in Figure 1 and the pyramid of numbers drawn in (c).
  27. 1(a)4 marks· CAPE Environmental Science Unit 1 · 2007 · Paper 2State the name of EACH of the TWO groups of organisms, A and B. Give ONE example of an organism in EACH group.
  28. 1(b)8 marks· CAPE Environmental Science Unit 1 · 2007 · Paper 2Explain how the role of EACH group of organisms is important to the functioning of the ecosystem.
  29. 3(a)(i)4 marks· CAPE Environmental Science Unit 1 · 2008 · Paper 2Name TWO decomposers and state ONE source of energy for EACH.
  30. 3(a)(ii)4 marks· CAPE Environmental Science Unit 1 · 2008 · Paper 2Explain the importance of the decomposer food chain in the cycling of matter illustrated in Figure 1.
  31. 1(c)12 marks· CAPE Environmental Science Unit 1 · 2010 · Paper 2Suggest FOUR reasons to support the statement made by the teacher.
  32. 1(b)(i)4 marks· CAPE Environmental Science Unit 1 · 2011 · Paper 2Reproduce the outline of the ecological pyramid and label each trophic level with the correct organism chosen from: Cricket, Lizard, Grass, Mongoose.
  33. 1(b)(ii)4 marks· CAPE Environmental Science Unit 1 · 2011 · Paper 2Using the completed ecological pyramid from (b)(i), explain how energy flows through an ecosystem.
  34. 2(a)4 marks· CAPE Environmental Science Unit 1 · 2012 · Paper 2Distinguish between 'gaseous biogeochemical cycles' and 'sedimentary biogeochemical cycles'. In your response give ONE example of a gaseous biogeochemical cycle and ONE example of a sedimentary biogeochemical cycle.
  35. 2(b)(i)2 marks· CAPE Environmental Science Unit 1 · 2012 · Paper 2State the ten per cent rule for the transfer of energy from one trophic level to the next in an ecosystem.
  36. 2(b)(ii)3 marks· CAPE Environmental Science Unit 1 · 2012 · Paper 2On the basis of the rule stated in (b)(i), explain why it will be more energy efficient for humans to eat corn rather than beef.
  37. 1(a)(i)3 marks· CAPE Environmental Science Unit 1 · 2013 · Paper 2Name the types of bacteria responsible for allowing Processes I, II, and III to occur.
  38. 1(a)(ii)6 marks· CAPE Environmental Science Unit 1 · 2013 · Paper 2Explain THREE ways in which human activities can alter the nitrogen cycle.
  39. 1(a)(iii)5 marks· CAPE Environmental Science Unit 1 · 2013 · Paper 2Justify the advice given to a farmer that intercropping with legumes regularly could reduce the expenditure on nitrogen fertilizers.
  40. 1(a)(i)2 marks· CAPE Environmental Science Unit 1 · 2014 · Paper 2Calculate the energy available at the primary consumer level.
  41. 1(a)(ii)2 marks· CAPE Environmental Science Unit 1 · 2014 · Paper 2Explain how energy flows through the trophic levels.
  42. 6(c)(i)3 marks· CAPE Environmental Science Unit 1 · 2014 · Paper 2Calculate the combined total net primary productivity achievable from tropical rainforest and savannah ecosystems.
  43. 6(c)(ii)2 marks· CAPE Environmental Science Unit 1 · 2014 · Paper 2Identify which ecosystems possess the HIGHEST and LOWEST average net primary productivity.
  44. 1(a)(i)1 mark· CAPE Environmental Science Unit 1 · 2015 · Paper 2Name the type of ecological pyramid shown in Figure 1.
  45. 1(a)(ii)3 marks· CAPE Environmental Science Unit 1 · 2015 · Paper 2Use the information in Figure 1 to calculate the amount of energy that is available at the level of the producers. Show all working.
  46. 1(b)6 marks· CAPE Environmental Science Unit 1 · 2015 · Paper 2Outline THREE ways in which the phosphorus cycle may be impacted by the activities of humans.
  47. 1(a)6 marks· CAPE Environmental Science Unit 1 · 2016 · Paper 2Distinguish between sedimentary and gaseous biogeochemical cycles, providing ONE example of each type.
  48. 1(a)(i)5 marks· CAPE Environmental Science Unit 1 · 2018 · Paper 2In the space provided, draw a fully labelled diagram to illustrate the carbon cycle.
  49. 1(a)(ii)3 marks· CAPE Environmental Science Unit 1 · 2018 · Paper 2Outline THREE ways in which carbon and the carbon cycle are important to organisms.
  50. 2(a)(i)4 marks· CAPE Environmental Science Unit 1 · 2018 · Paper 2Study Figure 1 and construct a food web for the ecosystem using the organisms shown in Figure 1.
  51. 2(a)(ii)4 marks· CAPE Environmental Science Unit 1 · 2018 · Paper 2Discuss TWO significant roles of the producers in the constructed food web.
  52. 1(b)4 marks· CAPE Environmental Science Unit 1 · 2019 · Paper 2Describe TWO ways in which human activities may affect the stages of the water cycle.
  53. 1(c)(i)5 marks· CAPE Environmental Science Unit 1 · 2019 · Paper 2Use the information in Table 1 to construct a pyramid of numbers in the space provided.
  54. 1(c)(ii)4 marks· CAPE Environmental Science Unit 1 · 2019 · Paper 2Explain why the pyramid of biomass for a marine ecosystem is inverted.

Related topics in Fundamental Ecological Principles