Quelpr
3 marksEcological Systems, Biodiversity and Conservations

CAPE Biology Unit 2 · 2017 · Paper 2 · Question 1(c)

Ecosystems are dynamic in nature. Figure 2 illustrates the changes in population sizes of an agricultural pest and its predator over time, following the introduction of the predator species.

Describe the changes in the two populations during the period.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(i)Identify the reactants or products labelled A, B, C, D, E and F in Figure 1. Write your answers in the relevant spaces in Figure 1.[4 marks]
  2. 1(a)(ii)Explain the significance of the process labelled X in Figure 1.[3 marks]
  3. 1(b)(i)In the box below, draw a labelled diagram to show the detailed structure of a mitochondrion. NOTE: No title is required.[3 marks]
  4. 1(b)(ii)On your diagram, use labelled arrows to identify FOUR key substances of cellular respiration that move out of the mitochondrion.[2 marks]

More practice: the rest of this paper · more Ecological Systems, Biodiversity and Conservations questions · all CAPE Biology Unit 2 past papers