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Ecological Systems, Biodiversity and Conservations · CAPE Biology Unit 2

68 past-paper questions on Ecological Systems, Biodiversity and Conservations, part of Bioenergetics and Conservation, from every CAPE Biology Unit 2 paper on Quelpr.

Practise Ecological Systems, Biodiversity and Conservations
  1. 1(c)3 marks· Biology · Unit 2 Q1 1(c)Describe the changes in the two populations during the period.
  2. 1(c)8 marks· Biology · Unit 2 Q1 1(c)Discuss TWO ways in which global warming may impact the mangrove ecosystem shown in Figure 3. You MUST present your response in complete paragraphs.
  3. 1(c)(i)2 marks· Biology · Unit 2 Q1 1(c)(i)Define the term 'species diversity'.
  4. 1(c)(i)3 marks· Biology · Unit 2 Q1 1(c)(i)Define EACH of the following components of biodiversity: Species diversity, Genetic diversity, Ecosystem diversity.
  5. 1(c)(ii)9 marks· Biology · Unit 2 Q1 1(c)(ii)Explain the impact of climate change on EACH of the following components of biodiversity. You MUST present your response in complete paragraphs: Species diversity, Genetic diversity, Ecosystem diversity.
  6. 1(c)(ii)3 marks· Biology · Unit 2 Q1 1(c)(ii)Explain how high species diversity affects the stability of an ecosystem.
  7. 1(d)(i)1 mark· Biology · Unit 2 Q1 1(d)(i)Suggest ONE way in which this genetic variation may have arisen in the moth population.
  8. 1(d)(i)4 marks· Biology · Unit 2 Q1 1(d)(i)Classify EACH of the following factors as EITHER an abiotic factor or a biotic factor. Ocean currents, The lionfish as predators, The lionfish feeding on cleaner fish, Warm Caribbean Sea.
  9. 1(d)(ii)1 mark· Biology · Unit 2 Q1 1(d)(ii)Suggest ONE reason why genetic variation would be important to the moths.
  10. 1(d)(ii)9 marks· Biology · Unit 2 Q1 1(d)(ii)Explain how any THREE of the factors in (d)(i) influenced the dynamics of the coral reef ecosystem since the invasion of the lionfish.
  11. 1(f)(i)1 mark· Biology · Unit 2 Q1 1(f)(i)Name an appropriate device which can be used to capture the moth.
  12. 1(f)(ii)1 mark· Biology · Unit 2 Q1 1(f)(ii)State how the moth is captured using the device named in (f) (i).
  13. 1(f)(iii)1 mark· Biology · Unit 2 Q1 1(f)(iii)State ONE precaution that should be taken for the follow-up experiment in (f) (i).
  14. 3(a)(i)2 marks· Biology · Unit 2 Q3 3(a)(i)Define the term 'species'.
  15. 3(a)(ii)2 marks· Biology · Unit 2 Q3 3(a)(ii)Suggest TWO possible outcomes if the two species compete for the same resources.
  16. 3(c)3 marks· Biology · Unit 2 Q3 3(c)Explain the changes in the population density of the rabbits and wolves with time.
  17. 5(a)4 marks· Biology · Unit 2 Q5 5(a)Using TWO examples, define the term 'species'.
  18. 5(b)(i)2 marks· Biology · Unit 2 Q5 5(b)(i)State TWO ways by which speciation occurs.
  19. 5(b)(ii)4 marks· Biology · Unit 2 Q5 5(b)(ii)Explain how EACH of the TWO ways stated in (b) (i) leads to speciation.
  20. 5(c)5 marks· Biology · Unit 2 Q5 5(c)Outline THREE advantages and TWO disadvantages of natural selection.
  21. 6(a)1 mark· Biology · Unit 2 Q6 6(a)Define the term 'abiotic factor'.
  22. 6(b)2 marks· Biology · Unit 2 Q6 6(b)State TWO examples of abiotic factors.
  23. 6(c)3 marks· Biology · Unit 2 Q6 6(c)List THREE human activities that may disrupt the abiotic factors in an ecosystem.
  24. 3(a)1 mark· CAPE Biology Unit 2 · 2003 · Paper 1State briefly what happens to a stable ecosystem when it is disturbed.
  25. 3(b)(i)2 marks· CAPE Biology Unit 2 · 2003 · Paper 1Suggest the effects that removing Species A will have on the coral reef ecosystem.
  26. 3(b)(ii)3 marks· CAPE Biology Unit 2 · 2003 · Paper 1Suggest the effects that removing Species B will have on the coral reef ecosystem.
  27. 7(d)(i)4 marks· CAPE Biology Unit 2 · 2003 · Paper 1Outline THREE ways in which the government can determine if the genetically modified maize has contaminated the indigenous maize.
  28. 7(d)(ii)1 mark· CAPE Biology Unit 2 · 2003 · Paper 1If the indigenous maize has been contaminated by the genetically modified maize, deduce how the genotype could have been affected.
  29. 7(d)(iii)1 mark· CAPE Biology Unit 2 · 2003 · Paper 1How can the original genotype of the indigenous maize be restored?
  30. 5(b)(i)6 marks· CAPE Biology Unit 2 · 2005 · Paper 2In Alaskan temperate forests there may be fewer than 50 tree and shrub species per hectare, while Guyanese forests have over 500 species per hectare. Discuss the effects of the variety of plant species in Guyana on the…
  31. 5(b)(ii)4 marks· CAPE Biology Unit 2 · 2005 · Paper 2Discuss how the stability of an ecosystem is related to its species diversity.
  32. 5(a)(i)1 mark· CAPE Biology Unit 2 · 2006 · Paper 2Define the term: Ecosystem.
  33. 5(a)(ii)1 mark· CAPE Biology Unit 2 · 2006 · Paper 2Define the term: Habitat.
  34. 5(a)(iii)1 mark· CAPE Biology Unit 2 · 2006 · Paper 2Define the term: Ecological niche.
  35. 5(b)4 marks· CAPE Biology Unit 2 · 2006 · Paper 2Discuss how the components in an ecosystem function to achieve and maintain ecological balance.
  36. 4(a)(i)4 marks· CAPE Biology Unit 2 · 2008 (T&T) · Paper 2Discuss the concept of 'biodiversity' in terms of genetic, species and ecosystem diversity.
  37. 4(a)(ii)4 marks· CAPE Biology Unit 2 · 2008 (T&T) · Paper 2Outline two reasons why it is important to conserve biodiversity.
  38. 4(b)(i)3 marks· CAPE Biology Unit 2 · 2008 (T&T) · Paper 2Define the term 'ecosystem'.
  39. 4(b)(ii)4 marks· CAPE Biology Unit 2 · 2008 (T&T) · Paper 2Discuss why ecosystems are considered dynamic in nature.
  40. 4(a)4 marks· CAPE Biology Unit 2 · 2009 · Paper 2Distinguish between the terms 'ecosystem' and 'ecological niche'.
  41. 4(c)(i)3 marks· CAPE Biology Unit 2 · 2009 · Paper 2Using examples, explain the difference between the terms 'in situ' and 'ex situ' as they relate to biological conservation.
  42. 4(c)(ii)4 marks· CAPE Biology Unit 2 · 2009 · Paper 2Discuss TWO challenges associated with the use of zoological parks for the maintenance of biodiversity of large mammals.
  43. Q101 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1In the 1950's, G. F. Gause observed that two species of flour beetle, Tribolium confusum and Tribolium castaneum, survived well on their own. However, when they were put together, only one of the species survived. This…
  44. Q131 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1The number and range of different species found in an ecosystem are called its
  45. Q121 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Which of the following describes an ecosystem?
  46. Q131 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1The number and range of different species found in an ecosystem are called its
  47. Q151 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Which of the following are true about biodiversity? I. Variety of species on earth. II. Can be defined at the genetic level. III. May be defined at the ecosystem level. IV. Relates only to endangered species.
  48. 4(a)(i)4 marks· CAPE Biology Unit 2 · 2012 · Paper 2Explain what is meant by the terms 'species diversity' and 'stability' of a community.
  49. 4(a)(ii)5 marks· CAPE Biology Unit 2 · 2012 · Paper 2Explain why species diversity is positively correlated with ecosystem stability, referring to resistance and resilience of the communities in the ecosystem.
  50. Q101 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1In the 1950's, G. F. Gause observed that two species of flour beetle, Tribolium confusum and Tribolium castaneum, survived well on their own. However, when they were put together, only one of the species survived. This…
  51. Q131 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1The number and range of different species found in an ecosystem are called its
  52. Q141 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1Which of the following does NOT explain how deforestation might increase the risk of flooding?
  53. Q151 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1Which of the following is NOT a conservation method used to maintain biodiversity?
  54. 4(a)(i)2 marks· CAPE Biology Unit 2 · 2013 · Paper 2Explain the concept of 'biodiversity'.
  55. 4(a)(ii)6 marks· CAPE Biology Unit 2 · 2013 · Paper 2Discuss why biodiversity loss is a major concern, citing one direct benefit and two indirect benefits of maintaining biodiversity.
  56. 4(b)(i)4 marks· CAPE Biology Unit 2 · 2013 · Paper 2Distinguish between in situ and ex situ conservation of biodiversity, giving one example of each method.
  57. 4(b)(ii)3 marks· CAPE Biology Unit 2 · 2013 · Paper 2Briefly comment on three limitations of using ex situ conservation methods to maintain biodiversity.
  58. Q111 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1The way in which the specific environment is exploited by an organism is an appropriate definition for
  59. Q141 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1Which of the following does NOT explain how deforestation might increase the risk of flooding?
  60. Q151 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1Which of the following is NOT a conservation method used to maintain biodiversity?
  61. 4(c)7 marks· CAPE Biology Unit 2 · 2014 · Paper 2Describe SIX biotic interactions that can occur in an ecosystem. Include a brief explanation of the term 'biotic interaction'.
  62. Q101 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1When a species plays a role in its community, it is said to be in its
  63. Q141 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1Which of the following does NOT explain how deforestation might increase the risk of flooding?
  64. Q151 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1Which of the following is NOT a conservation method used to maintain biodiversity?
  65. 4(b)4 marks· CAPE Biology Unit 2 · 2015 · Paper 2Outline the current view of the relationship between biological diversity and ecosystem stability, and briefly discuss evidence in support of this viewpoint.
  66. 4(b)(i)5 marks· CAPE Biology Unit 2 · 2016 · Paper 2Discuss two environmental benefits of maintaining biodiversity, including a definition of biodiversity in your discussion.
  67. 4(b)(ii)4 marks· CAPE Biology Unit 2 · 2016 · Paper 2Giving examples, distinguish between in situ and ex situ conservation methods.
  68. 4(b)9 marks· CAPE Biology Unit 2 · 2018 · Paper 2Within any ecosystem, biodiversity exists at three levels: genetic, species and ecosystem. Discuss the interaction among these three levels of biodiversity. Include in your answer an explanation of EACH level — genetic,…

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