Quelpr
6 marksEcosystem Dynamics and Community Stability

CAPE Environmental Science Unit 1 · 2017 · Paper 2 · Question 2(a)(ii)

Two groups of students were taken to a natural savannah ecosystem where they determined the distribution of three plant species. Group I used the line transect method while Group II used the quadrat method. Table 1 shows data for Group I and Table 2 shows data for Group II.

Using the data collected by Group II, calculate the estimated density for Species A and the percentage frequency of Species B.

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. 2(a)(i)Explain the difference between the methods used by Group I and Group II respectively.[3 marks]
  2. 2(a)(iii)The results in Table 2 show a type of interaction between Species A and Species B. Use the data in the table to explain this type of interaction.[3 marks]
  3. 2(b)(i)Describe how the data in Tables 1 and 2 may be used to provide information on the distribution of the three plant species.[4 marks]
  4. 2(b)(ii)Explain two ways in which human activities can disrupt the integrity of natural ecosystems.[4 marks]

More practice: the rest of this paper · more Ecosystem Dynamics and Community Stability questions · all CAPE Environmental Science Unit 1 past papers