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Learning objective

Determine the magnification and dimensions of biological specimens, using millimetres as the unit of measurement.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyOrganisation of the organismCore content

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Quick explanation

Determine the magnification and dimensions of biological specimens, using millimetres as the unit of measurement

  • This point belongs to Size of specimens, especially Size of specimens outcomes.
  • You need to be able to determine the magnification and dimensions of biological specimens, using millimetres as the unit of measurement.
  • The key ideas to know are Calculate.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Calculate

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This objective helps connect Size of specimens outcomes to exam-style questions, flashcards, and revision notes for Size of specimens.

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Practice Questions7 linked questions

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Paper 3 structured question: Size of specimens

Paper 3Theory (Core)2 marks

Description

Leaf Observation

The image length of the leaf is 80 mm, and the magnification is 20.

  1. a

    Calculate the actual length of the leaf in millimetres.

    Aim for approximately 2 distinct marking points.

    [2]
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Cambridge IGCSEBiology resources