CAPE Biology Unit 2 · January 2022 · Paper 2

39 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)5 marksOn the grid provided on page 5, use appropriate scales and axes to draw a graph of the results obtained in Table 1. Provide an appropriate title for your graph and place hair length on the x-axis.
2. 1(b)2 marksState TWO precautions which should have been taken during this investigation.
3. 1(c)(i)2 marksDefine the following terms: Continuous variation; Discontinuous variation.
4. 1(c)(ii)1 markSuggest the type of variation which was investigated in this experiment.
5. 1(c)(iii)1 markIdentify the type of graph that would be suitable for representing the data from the second experiment.
6. 1(d)(i)1 markSuggest ONE way in which this genetic variation may have arisen in the moth population.
7. 1(d)(ii)1 markSuggest ONE reason why genetic variation would be important to the moths.
8. 1(d)(iii)6 marksWith the use of a genetic diagram, explain the results of a cross between a moth with brown wings and a moth with white wings that produces all offspring with brown wings.
9. 1(d)(iv)1 markSuggest the genotype of the parent with brown wings.
10. 1(e)2 marksSuggest how the creation of the new type of diamond back moth differs from the formation of moths with a different wing colour.
11. 1(f)(i)1 markName an appropriate device which can be used to capture the moth.
12. 1(f)(ii)1 markState how the moth is captured using the device named in (f) (i).
13. 1(f)(iii)1 markState ONE precaution that should be taken for the follow-up experiment in (f) (i).
14. 2(a)(i)1 markState ONE function of the Cerebrum.
15. 2(a)(ii)1 markState ONE function of the Cerebellum.
16. 2(a)(iii)1 markState ONE function of the Medulla.
17. 2(b)2 marksExplain how Philip's brain damage may have resulted in his loss of sight even though the physical structures of his eyes remain intact.
18. 2(c)(i)2 marksState TWO reasons why a balanced diet is important.
19. 2(c)(ii)2 marksState the names of TWO other substances which are commonly abused by persons.
20. 2(d)6 marksDiscuss THREE different effects of drug abuse. The effects may be physiological, social or economic.
21. 3(a)1 markDefine the term 'movement'.
22. 3(b)4 marksComplete the table below to outline TWO distinctions between movement in plants and animals.
23. 3(c)6 marksList THREE major functions of the human skeleton, other than locomotion, and name ONE bone that is responsible for EACH function listed.
24. 3(d)4 marksComplete the table below to outline TWO disadvantages of complete immobility in living organisms and state ONE consequence of EACH.
25. 4(a)(i)4 marksName the reproductive structures labelled A, B, C and D.
26. 4(a)(ii)1 markState how the flower in Figure 1 is pollinated.
27. 4(a)(iii)1 markGive ONE reason for the method of pollination stated in (a) (ii).
28. 4(b)6 marksComplete the table below to state THREE ways in which pollination differs from fertilization.
29. 4(c)(i)1 markName the process of cell division which leads to the cultivation of sugar cane.
30. 4(c)(ii)2 marksProvide TWO reasons to explain how the process named in (c) (i) leads to the propagation of sugar cane.
31. 5(a)4 marksUsing TWO examples, define the term 'species'.
32. 5(b)(i)2 marksState TWO ways by which speciation occurs.
33. 5(b)(ii)4 marksExplain how EACH of the TWO ways stated in (b) (i) leads to speciation.
34. 5(c)5 marksOutline THREE advantages and TWO disadvantages of natural selection.
35. 6(a)1 markDefine the term 'abiotic factor'.
36. 6(b)2 marksState TWO examples of abiotic factors.
37. 6(c)3 marksList THREE human activities that may disrupt the abiotic factors in an ecosystem.
38. 6(d)(i)3 marksFor Figure 2, describe the shape of the graph in the regions labelled A, B and C.
39. 6(d)(ii)6 marksDiscuss THREE ways in which human activities may have contributed to the spread of the animal pathogen.