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Relationships Among Organisms · CSEC Biology

24 past-paper questions on Relationships Among Organisms, part of Living Organisms in the Environment, from every CSEC Biology paper on Quelpr.

Practise Relationships Among Organisms
  1. 1(b)(iii)2 marks· Biology Q1 1(b)(iii)Identify the type of feeding relationship between the coral and the zooxanthellae and give a reason for your answer.
  2. 1(c)(i)1 mark· Biology Q1 1(c)(i)Identify the type of relationship that exists between the peanut plant and the bacteria.
  3. 1(c)(ii)2 marks· Biology Q1 1(c)(ii)Suggest an explanation for the differences in the shapes of the graphs.
  4. 1(c)(ii)3 marks· Biology Q1 1(c)(ii)Explain your answer in (c)(i) on page 6.
  5. 1(c)(iii)2 marks· Biology Q1 1(c)(iii)Name TWO features that the predatory fish may have that allow it to carry out its role as a predator.
  6. 1(c)(v)b)3 marks· Biology Q1 1(c)(v)b)Give TWO adaptations that Organism 6 should possess as a carnivore.
  7. 1(e)(i)2 marks· Biology Q1 1(e)(i)Name and describe the type of relationship that exists between the wild pine and the tree.
  8. 1(e)(ii)2 marks· Biology Q1 1(e)(ii)One student observes an orange-yellow vine growing on one portion of the tree where the leaves are dying. How does the relationship between this vine and the tree differ from the relationship described in (e)(i) above?
  9. 1(e)(iii)2 marks· Biology Q1 1(e)(iii)State TWO reasons why the vine causes the leaves of the tree to die.
  10. 2(b)(i)1 mark· Biology Q2 2(b)(i)Label on the graph the curve which represents the predator, using the letter A.
  11. 2(b)(ii)2 marks· Biology Q2 2(b)(ii)Use the number of organisms and the shape of the curves to state TWO reasons for your answer in (b) (i).
  12. 2(b)(iii)1 mark· Biology Q2 2(b)(iii)Assuming that the population of the predator drops to zero, extend the curve of the prey population on the graph. (Assume that no other changes have occurred in this community.)
  13. 2(b)(iv)1 mark· Biology Q2 2(b)(iv)Assuming that the population of the prey drops to zero, extend the curve of the predator population on the graph. (Assume that no other changes have occurred in this community.)
  14. 3(b)(i)2 marks· Biology Q3 3(b)(i)Identify, from the food web in Figure 4, ONE predator and ONE organism which is likely to be its prey.
  15. 3(c)(i)2 marks· Biology Q3 3(c)(i)Apart from predator/prey, identify ONE other relationship that may exist in a food web, and provide an example.
  16. 3(c)(ii)2 marks· Biology Q3 3(c)(ii)Give ONE advantage of having special relationships among organisms in a food web.
  17. 4(b)(i)7 marks· Biology Q4 4(b)(i)Identify ONE relationship that is important in biological control and explain how this relationship functions in biological control.
  18. 5(a)(iii)2 marks· Biology Q5 5(a)(iii)Leguminous plants have bacteria in their root nodules, which are involved in the nitrogen cycle. The relationship between the legumes and the bacteria is described as mutualistic. Explain why this description is…
  19. 5(b)4 marks· Biology Q5 5(b)Apart from mutualism, identify TWO OTHER types of relationships that occur among living organisms. Give ONE example of each relationship you identify.
  20. 6(a)6 marks· Biology Q6 6(a)Using a suitable example of EACH, distinguish between a predator-prey relationship and parasitism.
  21. 6(b)(i)9 marks· Biology Q6 6(b)(i)Describe TWO types of feeding relationships that exist in an ecosystem and give an example of EACH type.
  22. 5(a)3 marks· CSEC Biology · January 2021 · Paper 2List the THREE types of symbiotic relationships.
  23. 5(b)3 marks· CSEC Biology · January 2021 · Paper 2Complete Table 2 by stating the type of symbiotic relationship that exists in each described scenario.
  24. 3(a)(ii)1 mark· CSEC Biology · May/June 2021 · Paper 2Identify a predator from the food web.

Related topics in Living Organisms in the Environment