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Describe the roles of xylem and phloem: (a) xylem is responsible for transporting water and mineral ions, as well as providing structural support, (b) phloem is responsible for transporting sucrose and amino acids.

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Cambridge IGCSE BiologyTransport in plantsCore content

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Describe the roles of xylem and phloem: (a) xylem is responsible for transporting water and mineral ions, as well as providing structural support, (b) phloem is responsible for transporting sucrose and amino acids

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  • You need to be able to describe the roles of xylem and phloem: (a) xylem is responsible for transporting water and mineral ions, as well as providing structural support, (b) phloem is responsible for transporting sucrose and amino acids.
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  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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Paper 3 structured question: Xylem and phloem

Paper 3Theory (Core)2 marks

Diagram Description

Diagram of plant vascular tissues

A diagram shows xylem and phloem tissues in a plant stem. Xylem vessels are thick-walled and located towards the inside, while phloem tubes are thinner-walled and located towards the outside.

  1. a

    State one substance transported by xylem.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Identify one role of xylem besides transport.

    Aim for approximately 1 distinct marking point.

    [1]
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