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4 marksThe Uptake and Transport of Water and Minerals

CAPE Biology Unit 2 · May/June 2024 · Paper 2 · Question 2(a)(iii)

Water is transported in a continuous column from the roots to the leaves of plants.

Describe how cohesion and capillarity aid in the ascent of water from stem to leaf.

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Other parts of this question

  1. 2(a)(i)In the space provided below, draw FOUR adjoining xylem vessels as shown in Figure 4.[5 marks]
  2. 2(a)(ii)Complete Table 2 by stating how EACH of the named structural features of xylem vessels allows them to carry out water transport in a plant.[6 marks]
  3. 2(b)(i)Explain how ONE structural feature of the companion cells enables them to carry out their role in sucrose transport.[3 marks]
  4. 2(b)(ii)A carrot is a taproot that can be used in vegetative propagation. Explain how a carrot can act both as a 'source' and a 'sink' at different times.[3 marks]
  5. 2(c)Explain the differences between plant and mammalian transport systems as it relates to the following. You MUST present your response in complete paragraphs.…[9 marks]

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