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3 marksEnergy Flow and Nutrient Cycling

CAPE Biology Unit 2 · 2011 · Paper 2 · Question 4(c)(ii)

A farmer experiencing difficulty growing grass is advised to plant alfalfa along with the grass and plough the legume into the soil after reaping. Suggest THREE ways in which this practice enables him to have a better crop of grass.

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Other parts of this question

  1. 4(a)Define the term 'phosphorylation' and distinguish between photophosphorylation and oxidative phosphorylation.[3 marks]
  2. 4(b)Discuss TWO similarities and TWO differences between the chemical reactions which occur during photophosphorylation and oxidative phosphorylation.[4 marks]
  3. 4(c)(i)Distinguish among the following terms as they relate to the nitrogen cycle: nitrification, denitrification, and nitrogen fixation.[5 marks]

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