Cambridge IGCSE Biology practice

Paper 3 structured question: Sense organs

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Paper

Marks

Topic

Sense organs

Exam-style question

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Paper 3Theory (Core)2 marks

Description of the blind spot in the eye.

Description

The blind spot is the area on the retina where the optic nerve leaves the eye and contains no light-sensitive cells.

a
Identify the part of the eye where the blind spot is located.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
State why the blind spot does not detect images.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)3 marks

Diagram Description

A labelled diagram shows the cornea, iris, pupil, lens, retina, optic nerve, and blind spot.

a
Identify the part of the eye that controls the size of the pupil.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
State the function of the retina.
Your answer
Aim for approximately 2 distinct marking points.
[2]