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Learning objective

Outline the process of single circulation in fish.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyTransport in animalsSupplement content

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Quick explanation

Outline the process of single circulation in fish

  • This point belongs to Circulatory systems, especially Circulatory systems outcomes.
  • You need to be able to outline the process of single circulation in fish.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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This objective helps connect Circulatory systems outcomes to exam-style questions, flashcards, and revision notes for Circulatory systems.

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Paper 4 structured question: Circulatory systems

Paper 4Theory (Extended)2 marks

Diagram Description

Single Circulation in Fish

A diagram shows the heart pumping deoxygenated blood to the gills, where it becomes oxygenated. The oxygenated blood then flows to the body tissues before returning to the heart.

StepDescription
1Heart pumps deoxygenated blood to the gills
2Blood is oxygenated at the gills
3Oxygenated blood flows to the body
4Deoxygenated blood returns to the heart
  1. a

    Describe the process of single circulation in fish.

    Aim for approximately 2 distinct marking points.

    [2]
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