CAPE Environmental Science Unit 1 · 2004 · Paper 1

36 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)1 markIdentify a secondary consumer from Figure 1.
2. 1(b)3 marksState three possible impacts on the ecosystem if the population of water beetles died out.
3. 1(c)2 marksState the importance of green algae in the mangrove ecosystem.
4. 1(d)(i)1 markIdentify which organism(s) has the least biomass.
5. 1(d)(ii)2 marksExplain why the organism(s) identified in (d)(i) have the least biomass.
6. 2(a)3 marksExplain the importance of natural selection in the survival of a species of organism.
7. 2(b)6 marksOutline two alternatives a resident species has when facing a new selective pressure, stating clearly the conditions under which each is likely to occur.
8. 3(a)(i)1 markFrom Figure 2, identify the pH range of the soil for the zone of physiological stress.
9. 3(a)(ii)1 markFrom Figure 2, identify the pH range of the soil for the zone of intolerance.
10. 3(a)(iii)1 markFrom Figure 2, identify the pH range of the soil for the optimal range.
11. 3(b)2 marksState two reasons why some factors affecting species survival are termed 'limiting factors'.
12. 3(c)1 markState one effect on a population when an abiotic factor shifts beyond its limit of tolerance.
13. 4(a)(i)1 markExplain what is meant by the term 'species diversity'.
14. 4(a)(ii)1 markRank the fields in terms of ecosystem stability, starting with the most stable.
15. 4(a)(iii)2 marksState two reasons to support your ranking of ecosystem stability.
16. 4(b)2 marksState one feature common to an agricultural farm and a natural ecosystem.
17. 5(a)3 marksCalculate the average annual growth rate of the population between 1991 and 1999.
18. 5(b)2 marksCalculate the doubling time of the population based on the calculated growth rate.
19. 5(c)3 marksPredict the size of the population in 2038, stating your assumption.
20. 6(a)2 marksBriefly describe how world population has grown from 1800 to the present.
21. 6(b)6 marksOutline three reasons for the rapid growth in world population from 1800 to the present.
22. 7(a)(i)1 markDefine the term 'per capita GNP'.
23. 7(a)(ii)1 markState the significance of per capita GNP of countries.
24. 7(b)2 marksState the relationship between population growth rate and per capita GNP using the data in Table 3.
25. 7(c)4 marksExplain the relationship between population growth rate and per capita GNP identified in (b).
26. 86 marksDiscuss whether you agree with the statement 'Man is not dependent on ecological processes to the same extent as other organisms', justifying your viewpoint with an appropriate example.
27. 9(a)3 marksExplain the concept of Maximum Sustainable Yield (MSY) in relation to harvesting a natural resource.
28. 9(b)2 marksIdentify the MSY and its corresponding harvesting effort from Figure 3.
29. 9(c)3 marksExplain the impact on the resource if harvesting occurs at point 'A' in Figure 3.
30. 10(a)1 markExplain what is meant by 'genetic resources'.
31. 10(b)(i)3 marksState, with one reason, whether genetic resources are renewable or non-renewable resources.
32. 10(b)(ii)3 marksState, with one reason, whether genetic resources are consumptive or non-consumptive resources.
33. 11(a)4 marksOutline two environmental impacts of mining in a named Caribbean country.
34. 11(b)4 marksState four ways an Environmental Impact Assessment can mitigate the impacts of mining.
35. 12(a)4 marksState three ways in which location affects the exploitation of a named natural resource in the Caribbean.
36. 12(b)3 marksState three ways in which technology affects the exploitation of a named natural resource in the Caribbean.