The human eye can form images of objects that are at different distances away from the eye - AQA - GCSE Biology - Question 4 - 2021 - Paper 1
Question 4
The human eye can form images of objects that are at different distances away from the eye.
Figure 7 is a diagram of the eye.
The eye in Figure 7 is focused on a d... show full transcript
Worked Solution & Example Answer:The human eye can form images of objects that are at different distances away from the eye - AQA - GCSE Biology - Question 4 - 2021 - Paper 1
Step 1
How does the lens refract the light more?
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Answer
The lens refracts the light more by becoming thicker. This increased curvature allows the lens to bend light rays more effectively, aiding in focusing on nearby objects.
Step 2
Which two structures control the shape of the lens?
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Answer
The ciliary muscles and the suspensory ligaments control the shape of the lens. The ciliary muscles contract and relax to adjust the tension on the suspensory ligaments, which in turn alters the lens shape for focusing.
Step 3
Name the structure.
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Answer
The structure is the retina. It is critical in forming clear images as it receives light rays focused by the lens.
Step 4
Complete Figure 8.
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Answer
For the boxes in Figure 8:
2: retina
3: brain
4: muscles
