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3 marksPhotosynthesis and Energy Flow

CSEC Human and Social Biology · January 2010 · Paper 2 · Question 14(a)(i)

Feeding relationships and ecological roles.

Define EACH of the following terms: Herbivore, Carnivore, Omnivore.

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  1. 14(a)(ii)What is meant by the term 'primary producer'?[2 marks]
  2. 14(b)Construct a food chain consisting of the following organisms: mountain chicken, cricket, humans, grass, and lizard.[3 marks]
  3. 14(c)(i)Discuss the adverse effects of insecticides on the environment, providing THREE distinct points.[6 marks]
  4. 14(c)(ii)Farmers decide to use biological control using a wasp to kill citrus bugs. Suggest ONE advantage of this biological control method and TWO possible effects on…[6 marks]

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