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2 marksFood and Nutrition

CSEC Integrated Science · 2008 · Paper 2 · Question 5(a)

A marine biologist identified large fish, small animals and larvae, algae and small plants, and small fish in a river flowing through a village.

Draw a food chain showing the feeding relationships among all of the identified organisms.

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Other parts of this question

  1. 5(b)Identify which of the organisms are producers.[1 mark]
  2. 5(c)If toxic chemicals killed the small animals and larvae in the river, state TWO effects this would have on the other organisms.[2 marks]
  3. 5(d)State TWO methods that villagers can use to catch fish in the river.[2 marks]
  4. 5(e)(i)State whether the same method of fishing used in the river could be used by deep sea fishermen.[1 mark]
  5. 5(e)(ii)Provide TWO reasons for the response in (e)(i).[2 marks]
  6. 5(f)(i)John placed two live small fish in a sealed bottle. State what will happen to the fish after a while.[1 mark]
  7. 5(f)(ii)Suggest a reason for what happens to the fish in the sealed bottle.[1 mark]
  8. 5(g)Describe how the sun can be used to purify polluted river water for domestic use.[3 marks]

More practice: the rest of this paper · more Food and Nutrition questions · all CSEC Integrated Science past papers