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4 marksTransport Systems

CSEC Biology · May/June 2009 · Paper 2 · Question 4(c)

One lesson taught to the Boy Scouts troop on their hike was that the plants along the trail were adapted to conserve water.

Suggest TWO reasons why the plants observed growing along the trail had mechanisms to reduce water loss.

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Other parts of this question

  1. 4(a)(i)With the aid of a fully annotated diagram of the kidney (uriniferous) tubule, explain how urine is produced and gets to the bladder.[8 marks]
  2. 4(a)(ii)Suggest why urine production is important in humans.[8 marks]
  3. 4(b)Explain how his body functions to deal with the excess water.[3 marks]

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