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Cambridge IGCSE Biology practice

Paper 3 structured question: Photosynthesis

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Photosynthesis

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Paper 3Theory (Core)2 marks

Carbohydrates produced by photosynthesis have different roles in plants.

Description

Carbohydrate Functions

Plants produce glucose during photosynthesis. This glucose can be used immediately or converted into other carbohydrates for various purposes.

  1. a

    State one use of starch in plants.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Identify the carbohydrate used to build plant cell walls.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Photosynthesis

Paper 3Theory (Core)2 marks

Description

Carbohydrate Uses

Glucose is produced in photosynthesis and can be converted into other carbohydrates such as sucrose and starch. Nectar contains sugars to attract pollinators.

  1. a

    State the carbohydrate transported in the phloem.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    State why plants produce nectar containing sugars.

    Aim for approximately 1 distinct marking point.

    [1]