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Biodiversity: CAIE A‑Level Biology questions

Every CAIE A-Level Biology exam question on 18.2 Biodiversity, June 2024 and the specimen papers, with its mark scheme and examiner’s report.

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240 questions

  1. Q8(c)(i)

    June 2024 · Paper 4

    3 marks18.2 Biodiversity
    The whole paper ↗
    June 2024 Paper 4, question 8(c)(i): Human activity has disturbed the habitat of many populations of spectacled bear, Tremarctos ornatus. The spectacled bear feeds on a variety of plant and animal

  2. Q8(c)(ii)

    June 2024 · Paper 4

    1 mark18.2 Biodiversity
    The whole paper ↗
    June 2024 Paper 4, question 8(c)(ii): The scientists calculated a D value of 0.833 for the undisturbed population. Explain what is shown by the difference in the D values between the two populations

  3. Q9(a)(i)

    Specimen · Paper 4

    3 marks18.2 Biodiversity
    The whole paper ↗
    Specimen Paper 4, question 9(a)(i): Simpson’s index of diversity (D) for the dung beetles on the grassland site grazed by cattle was calculated as 0.522, using the formula: J N KK d n n 2 OO D = 1

  4. Q9(a)(ii)

    Specimen · Paper 4

    2 marks18.2 Biodiversity
    The whole paper ↗
    Specimen Paper 4, question 9(a)(ii): Describe what the results in Table 9.1 and both figures for Simpson’s index of diversity show about the effect of grazing by cattle on the diversity of dung bee

  5. Q9(b)

    Specimen · Paper 4

    4 marks18.2 Biodiversity
    The whole paper ↗
    Specimen Paper 4, question 9(b): Other species of beetle that do not feed on animal dung are found on the grassland sites. Name and describe one method for estimating the population size of a s
All 5 questions on Biodiversity, as a list
  1. June 2024, Paper 4, Q8(c)(i) (3 marks): Human activity has disturbed the habitat of many populations of spectacled bear, Tremarctos ornatus. The spectacled bear feeds on a variety of plant and animal
  2. June 2024, Paper 4, Q8(c)(ii) (1 mark): The scientists calculated a D value of 0.833 for the undisturbed population. Explain what is shown by the difference in the D values between the two populations
  3. Specimen, Paper 4, Q9(a)(i) (3 marks): Simpson’s index of diversity (D) for the dung beetles on the grassland site grazed by cattle was calculated as 0.522, using the formula: J N KK d n n 2 OO D = 1
  4. Specimen, Paper 4, Q9(a)(ii) (2 marks): Describe what the results in Table 9.1 and both figures for Simpson’s index of diversity show about the effect of grazing by cattle on the diversity of dung bee
  5. Specimen, Paper 4, Q9(b) (4 marks): Other species of beetle that do not feed on animal dung are found on the grassland sites. Name and describe one method for estimating the population size of a s

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