Quelpr
4 marksFood Chains, Food Webs, and Decomposers

CSEC Biology · January 2008 · Paper 2 · Question 5(a)(i)

Figure 5 shows an incompletely labelled nitrogen cycle.

Name the process carried out by bacteria at EACH of the stages indicated by P, Q, R and S.

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. 5(a)(ii)Explain how nitrates from the soil become protein in plants and animals.[3 marks]
  2. 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…[2 marks]
  3. 5(b)Apart from mutualism, identify TWO OTHER types of relationships that occur among living organisms. Give ONE example of each relationship you identify.[4 marks]

More practice: the rest of this paper · more Food Chains, Food Webs, and Decomposers questions · all CSEC Biology past papers