CAPE Biology Unit 2 · 2010 · Paper 2 · Question 2(b)
Identify THREE factors that affect the closing and opening of stomata, and explain how these factors function.
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Practise this questionOther parts of this question
- 2(a)(i)Explain FOUR precautions that should be taken when setting up and conducting this experiment.[4 marks]
- 2(a)(ii)From which leaf surface will the water loss most likely be GREATER?[1 mark]
- 2(a)(iii)Suggest an appropriate control for the experiment.[1 mark]
- 2(c)(i)Identify the structures labelled X and Y in Figure 3.[1 mark]
- 2(c)(ii)Discuss TWO structural differences between the cells labelled X and Y and describe how, in spite of these differences, they function as a unit.[4 marks]
- 2(c)(iii)Name ONE route by which substances move from the chloroplast in leaves to the phloem.[1 mark]
More practice: the rest of this paper · more The Uptake and Transport of Water and Minerals questions · all CAPE Biology Unit 2 past papers