CSEC Agricultural Science · May/June 2016 · Paper 2

30 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)2 marksUse the letters from the diagram to identify the demand curve and the supply curve.
2. 1(b)2 marksSuggest TWO reasons for a reduction in the price of yam from 50 to 20 per kg within the last month.
3. 2(a)2 marksDefine the term 'mixed farming'.
4. 2(b)2 marksWith reference to Table 1, suggest TWO reasons why Farmer Rampersad's loan application was denied.
5. 3(a)1 markDefine the term 'soil erosion'.
6. 3(b)1 markIdentify the type of soil erosion shown in Figure 2.
7. 3(c)2 marksSuggest TWO soil management practices to prevent the type of soil erosion shown in Figure 2.
8. 4(a)(i)1 markBriefly explain the term 'secondary tillage'.
9. 4(a)(ii)1 markName ONE implement used in secondary tillage.
10. 4(b)(i)1 markName ONE item of protective clothing that prevents contamination when spraying pesticides with a knapsack sprayer.
11. 4(b)(ii)1 markSuggest ONE safety check to perform on the knapsack sprayer before use.
12. 5(a)2 marksIdentify the structures labelled X and Y in the two digestive systems shown in Figure 3.
13. 5(b)2 marksSuggest TWO ways high temperatures in the dry season may affect the behaviour of broiler birds.
14. 6(a)2 marksDefine the term 'dressing percentage'.
15. 6(b)2 marksSuggest TWO reasons for the difference between the dressing percentages of two goats (50% and 60%).
16. 7(a)2 marksState ONE difference between a partial budget and a complete budget.
17. 7(b)(i)3 marksIdentify THREE fixed costs from Table 2.
18. 7(b)(ii)3 marksIdentify THREE variable costs from Table 2.
19. 7(c)2 marksCalculate the gross margin using the information in Table 2, showing all calculations and the formula.
20. 7(d)2 marksUsing the gross margin calculated in (c), determine whether Farmer Lall's operations are profitable or not, providing a reason.
21. 8(a)(i)3 marksSuggest THREE harvesting practices that may have resulted in the poor quality of the anthurium flowers.
22. 8(a)(ii)3 marksAdvise Farmer Anne on THREE postharvest practices to improve anthurium flower quality.
23. 8(b)6 marksExplain THREE ways in which growing sweet peppers under 50% shade saran netting is likely to affect plant growth and development.
24. 9(a)(i)1 markIdentify ONE legume used to feed cattle.
25. 9(a)(ii)2 marksState TWO characteristics of legumes.
26. 9(b)(i)2 marksSuggest ONE benefit of feeding cattle with grass and ONE benefit of feeding with legume.
27. 9(b)(ii)1 markSuggest ONE negative effect of feeding excess legumes to cattle.
28. 9(c)(i)2 marksExplain the principle of rotational grazing.
29. 9(c)(ii)3 marksSuggest THREE advantages of using rotational grazing.
30. 9(c)(iii)1 markSuggest ONE challenge that farmers may experience with a rotational grazing system.