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4 marksEcology, Niches, and Interactions

CAPE Environmental Science Unit 1 · 2004 · Paper 2 · Question 1(a)

An experiment was carried out where two protozoan species (A and B) were grown separately and then together under identical conditions, with their population densities recorded over time in Figure 1.

Distinguish between 'habitat' and 'niche'.

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

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Other parts of this question

  1. 1(b)With reference to Figure 1, state four observations regarding the change in population density of both species over time.[4 marks]
  2. 1(c)Outline four possible reasons for the observations made in (b).[12 marks]

More practice: the rest of this paper · more Ecology, Niches, and Interactions questions · all CAPE Environmental Science Unit 1 past papers