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Cambridge IGCSE Combined Science practice

What is the main purpose of photosynthesis for plants?

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Show answerPhotosynthesis revisionRevise the key idea

At a glance

MCQ

Type

cambridge_mcq

Style

Topic

Photosynthesis

Exam-style question

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What is the main purpose of photosynthesis for plants?.

  1. A.To produce energy
  2. B.To absorb nutrients
  3. C.To create glucose
  4. D.To release carbon dioxide

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Paper 6 structured question: Photosynthesis

Paper 6Alternative to PracticalPractical1 marks

Method

Method to Investigate Photosynthesis

1. Set up a beaker with water and a sprig of Elodea. 2. Place a lamp at varying distances from the beaker. 3. Count the number of oxygen bubbles produced in one minute at each distance.

Distance from lamp (cm)Number of bubbles produced
1015
2010
305
  1. a

    State the independent variable in this investigation.

    Aim for approximately 1 distinct marking point.

    [1]