CSEC Biology · May/June 2007 · Paper 2

33 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)(i)6 marksDescribe how the students may investigate the hypothesis. Include in your description any apparatus/materials required.
2. 1(a)(ii)2 marksWrite an aim for the investigation.
3. 1(a)(iii)1 markSuggest ONE precaution the students should take in their investigation.
4. 1(b)(i)6 marksOn the graph paper on page 5, construct a line graph to show the effect of carbon dioxide concentration on the rate of photosynthesis.
5. 1(b)(ii)2 marksUsing Table 1 and the graph you constructed, determine the concentration at which carbon dioxide is a limiting factor at high and low light intensities respectively.
6. 1(c)(i)2 marksUsing arrows only, illustrate on Figure 2 the pathway by which the products of photosynthesis arrive at storage cells or organs.
7. 1(c)(ii)1 markWhat is the name of the transporting tissue?
8. 1(c)(iii)1 markApart from carbon dioxide and sunlight, identify ONE OTHER environmental factor that is required for photosynthesis.
9. 1(d)(i)4 marksBreast milk is described as best for babies. Using the information in Table 2, give TWO reasons why this description is appropriate.
10. 1(d)(ii)1 markApart from nutrients, suggest ONE OTHER value of breast milk.
11. 1(e)4 marksMinerals are required for good nutrition in plants. Name TWO minerals used by plants and state the function of EACH mineral named.
12. 2(a)(i)1 markName the type of joint illustrated in Figure 3.
13. 2(a)(ii)4 marksLabel the diagram to illustrate the MAIN features of a joint.
14. 2(a)(iii)1 markIn the diagram at Figure 3, a pad of fat is shown. Suggest ONE function of this feature in the elbow joint.
15. 2(a)(iv)2 marksPeople who suffer from arthritis experience pain because certain parts of the joint are worn away. Identify TWO parts of the joint that are likely to be worn away.
16. 2(b)(i)2 marksName EACH vertebra shown in Figure 4.
17. 2(b)(ii)3 marksName THREE features that have similar functions in the two vertebrae shown in Figure 4.
18. 2(b)(iii)1 markIdentify ONE feature that distinguishes between the two vertebrae.
19. 3(a)(i)2 marksIdentify the stimulus for EACH pupil in Figure 5.
20. 3(a)(ii)3 marksFor Pupil II in Figure 5, describe how the response came about.
21. 3(a)(iii)2 marksHow are the responses illustrated by the pupils in Figure 5 important to humans?
22. 3(b)(i)2 marksUsing arrows, show on Figure 6 where an image that is viewed by this person would normally fall in relation to the retina.
23. 3(b)(ii)2 marksInnovations in treating eye defects include lens replacement. On the diagram below, draw the lens that is likely to correct the defect shown in Figure 6, if lens replacement is done.
24. 3(c)4 marksAlthough plants have no specialized organs of sensitivity such as the eye, they also respond to external stimuli. Explain TWO ways in which the response in plants is different from the response to external stimuli by…
25. 4(a)(i)6 marksComplete Figure 7 by labelling SIX parts of the fruit.
26. 4(a)(ii)2 marksThe seeds of the fruit shown in Figure 7 are dispersed by animals. Identify TWO ways in which these seeds are adapted for this process.
27. 4(b)(i)1 markWhat type of dispersal is shown by the fruit illustrated in Figure 8?
28. 4(b)(ii)4 marksGive TWO reasons why the plant parts illustrated in Figures 7 and 8 are classified by biologists as fruits.
29. 4(c)3 marksSuggest ONE similarity and TWO differences in the ways in which the ovary in humans and in plants functions.
30. 5(a)8 marksComplete Table 3 below by writing an example and the cause of EACH type of disease listed.
31. 5(b)(i)3 marksUsing information from the pie chart, give the THREE most common ways in which HIV and AIDS are spread in the Caribbean.
32. 5(b)(ii)2 marksSuggest TWO ways in which people in the Caribbean can reduce the spread of HIV and AIDS.
33. 5(b)(iii)2 marksIdentify TWO symptoms of AIDS.