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Cambridge IGCSE Biology practice

Paper 4 structured question: Sense organs

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Attempt questionSense organs revisionRevise the key idea

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Sense organs

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Paper 4Theory (Extended)3 marks

Accommodation is the process by which the eye changes focus between near and far objects.

Diagram Description

Diagram of the eye focusing on a near object

The diagram shows the ciliary muscles contracted, suspensory ligaments slack, and the lens thick and curved.

  1. a

    Explain how accommodation occurs when focusing on a near object.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Sense organs

Paper 4Theory (Extended)3 marks

Diagram Description

Diagram of the eye focusing on a distant object

The diagram shows the ciliary muscles relaxed, suspensory ligaments tight, and the lens thin and less curved.

  1. a

    Explain how accommodation occurs when focusing on a distant object.

    Aim for approximately 3 distinct marking points.

    [3]